title: How to unstack bars of barplot and display percentage on top of the bars in ggplot?
body: <p>I have dataset that has 17  categorical variables. However, I am interested in two variable <code>name</code> (Contains 33 different hotel names) and <code>NPS_Type</code> ('Promoter and Detractor). </p>
  
  <p>I am using below code to generate barplot, but for some reason the percent calculation seems to be reversed. i.e barplot is displaying percentage of promoter on Detractor bar and vice versa. So, I thought may be unstacking barplot might help. Any suggestion of how to fix this issue?</p>
  
  <pre><code>library(ggplot2)
  ggplot(few_var5, aes(x='Hotel Name-Long_PL', y = NPS_Type, fill= NPS_Type)) +
    geom_bar(aes(y=(..count..)/sum(..count..))) +
    geom_text(aes(y = ((..count..)/sum(..count..)),
                  label = scales::percent((..count..)/sum(..count..))), stat = "count", vjust = 0.25)
  </code></pre>
  
  <p>Sample that might be useful:</p>
  
  <pre><code>Casino_PL Postal Code_PL Fitness Center_PL Property Longitude_PL Mini-Bar_PL Spa_PL  NPS_Type
  105802          N          94523                 Y             -122.0611           N      N  Promoter
  105803          N          94523                 Y             -122.0611           N      N  Promoter
  105805          N          94523                 Y             -122.0611           N      N  Promoter
  105814          N          94523                 Y             -122.0611           N      N  Promoter
  105819          N          94523                 Y             -122.0611           N      N  Promoter
  105848          N          94523                 Y             -122.0611           N      N  Promoter
  105849          N          94523                 Y             -122.0611           N      N  Promoter
  105908          N          94523                 Y             -122.0611           N      N  Promoter
  105917          N          94523                 Y             -122.0611           N      N  Promoter
  105920          N          94523                 Y             -122.0611           N      N  Promoter
  105922          N          94523                 Y             -122.0611           N      N Detractor
  105930          N          94523                 Y             -122.0611           N      N  Promoter
  105935          N          94523                 Y             -122.0611           N      N  Promoter
  105961          N          94523                 Y             -122.0611           N      N Detractor
  105983          N          94523                 Y             -122.0611           N      N  Promoter
  106003          N          94523                 Y             -122.0611           N      N  Promoter
  106007          N          94523                 Y             -122.0611           N      N  Promoter
  106031          N          94523                 Y             -122.0611           N      N  Promoter
  106033          N          94523                 Y             -122.0611           N      N  Promoter
  106040          N          94523                 Y             -122.0611           N      N  Promoter
  106043          N          94523                 Y             -122.0611           N      N  Promoter
  106051          N          94523                 Y             -122.0611           N      N  Promoter
  106058          N          94523                 Y             -122.0611           N      N  Promoter
  106065          N          94523                 Y             -122.0611           N      N  Promoter
  106083          N          94523                 Y             -122.0611           N      N  Promoter
  106104          N          94523                 Y             -122.0611           N      N  Promoter
  106116          N          94523                 Y             -122.0611           N      N  Promoter
  106161          N          94523                 Y             -122.0611           N      N  Promoter
  106180          N          94523                 Y             -122.0611           N      N  Promoter
  106182          N          94523                 Y             -122.0611           N      N  Promoter
  106202          N          94523                 Y             -122.0611           N      N  Promoter
  106206          N          94523                 Y             -122.0611           N      N Detractor
  106216          N          94523                 Y             -122.0611           N      N  Promoter
  106218          N          94523                 Y             -122.0611           N      N  Promoter
  106253          N          94523                 Y             -122.0611           N      N  Promoter
  106278          N          94523                 Y             -122.0611           N      N  Promoter
  106305          N          94523                 Y             -122.0611           N      N  Promoter
  106326          N          94523                 Y             -122.0611           N      N  Promoter
  106328          N          94523                 Y             -122.0611           N      N  Promoter
  106331          N          94523                 Y             -122.0611           N      N  Promoter
  106359          N          94523                 Y             -122.0611           N      N  Promoter
  106389          N          94523                 Y             -122.0611           N      N  Promoter
  106418          N          94523                 Y             -122.0611           N      N  Promoter
  106434          N          94523                 Y             -122.0611           N      N  Promoter
  106441          N          94523                 Y             -122.0611           N      N  Promoter
  106464          N          94523                 Y             -122.0611           N      N  Promoter
  106468          N          94523                 Y             -122.0611           N      N  Promoter
  106474          N          94523                 Y             -122.0611           N      N  Promoter
  106526          N          94523                 Y             -122.0611           N      N  Promoter
  106530          N          94523                 Y             -122.0611           N      N  Promoter
  134812          N          94002                 Y             -122.2710           N      N  Promoter
  134815          N          94002                 Y             -122.2710           N      N  Promoter
  134820          N          94002                 Y             -122.2710           N      N  Promoter
  134822          N          94002                 Y             -122.2710           N      N  Promoter
  134825          N          94002                 Y             -122.2710           N      N  Promoter
  134826          N          94002                 Y             -122.2710           N      N  Promoter
  134827          N          94002                 Y             -122.2710           N      N  Promoter
  134829          N          94002                 Y             -122.2710           N      N  Promoter
                                             POV_H Property Latitude_PL Pool-Indoor_PL   State_PL
  105802                                   Leisure             37.94289              N California
  105803                                   Leisure             37.94289              N California
  105805                                   Leisure             37.94289              N California
  105814                                   Leisure             37.94289              N California
  105819                                   Leisure             37.94289              N California
  105848                                   Leisure             37.94289              N California
  105849                                   Leisure             37.94289              N California
  105908                                  Business             37.94289              N California
  105917                                  Business             37.94289              N California
  105920                                   Leisure             37.94289              N California
  105922                                  Business             37.94289              N California
  105930                                  Business             37.94289              N California
  105935                                   Leisure             37.94289              N California
  105961                                   Leisure             37.94289              N California
  105983                                   Leisure             37.94289              N California
  106003  Combination of both business and leisure             37.94289              N California
  106007                      Prefer not to answer             37.94289              N California
  106031                                  Business             37.94289              N California
  106033                                   Leisure             37.94289              N California
  106040  Combination of both business and leisure             37.94289              N California
  106043                                   Leisure             37.94289              N California
  106051                                   Leisure             37.94289              N California
  106058                                   Leisure             37.94289              N California
  106065                                   Leisure             37.94289              N California
  106083                                  Business             37.94289              N California
  106104                                   Leisure             37.94289              N California
  106116                                   Leisure             37.94289              N California
  106161                                   Leisure             37.94289              N California
  106180                                   Leisure             37.94289              N California
  106182                                   Leisure             37.94289              N California
  106202                                   Leisure             37.94289              N California
  106206                                  Business             37.94289              N California
  106216                                   Leisure             37.94289              N California
  106218                                  Business             37.94289              N California
  106253                                   Leisure             37.94289              N California
  106278                                   Leisure             37.94289              N California
  106305                                   Leisure             37.94289              N California
  106326                                  Business             37.94289              N California
  106328                                  Business             37.94289              N California
  106331                                  Business             37.94289              N California
  106359                                   Leisure             37.94289              N California
  106389                                  Business             37.94289              N California
  106418                      Prefer not to answer             37.94289              N California
  106434                                   Leisure             37.94289              N California
  106441                                  Business             37.94289              N California
  106464                                   Leisure             37.94289              N California
  106468  Combination of both business and leisure             37.94289              N California
  106474                                  Business             37.94289              N California
  106526                                   Leisure             37.94289              N California
  106530                                   Leisure             37.94289              N California
  134812                                  Business             37.53244              N California
  134815                                  Business             37.53244              N California
  134820  Combination of both business and leisure             37.53244              N California
  134822  Combination of both business and leisure             37.53244              N California
  134825                                  Business             37.53244              N California
  134826  Combination of both business and leisure             37.53244              N California
  134827                                  Business             37.53244              N California
  134829                                  Business             37.53244              N California
          LENGTH_OF_STAY_C Condition_Hotel_H          City_PL Pool-Outdoor_PL
  105802                 3                10    Pleasant Hill               Y
  105803                 2                10    Pleasant Hill               Y
  105805                 2                10    Pleasant Hill               Y
  105814                 4                10    Pleasant Hill               Y
  105819                 9                 9    Pleasant Hill               Y
  105848                 1                 8    Pleasant Hill               Y
  105849                 2                10    Pleasant Hill               Y
  105908                 5                10    Pleasant Hill               Y
  105917                 4                10    Pleasant Hill               Y
  105920                 2                10    Pleasant Hill               Y
  105922                 2                 5    Pleasant Hill               Y
  105930                35                10    Pleasant Hill               Y
  105935                 3                 9    Pleasant Hill               Y
  105961                 1                 9    Pleasant Hill               Y
  105983                 2                 9    Pleasant Hill               Y
  106003                 1                10    Pleasant Hill               Y
  106007                49                 8    Pleasant Hill               Y
  106031                 4                10    Pleasant Hill               Y
  106033                10                10    Pleasant Hill               Y
  106040                 5                10    Pleasant Hill               Y
  106043                 1                 9    Pleasant Hill               Y
  106051                 2                10    Pleasant Hill               Y
  106058                 1                10    Pleasant Hill               Y
  106065                 1                10    Pleasant Hill               Y
  106083                12                10    Pleasant Hill               Y
  106104                 4                10    Pleasant Hill               Y
  106116                 2                10    Pleasant Hill               Y
  106161                 1                10    Pleasant Hill               Y
  106180                 2                 9    Pleasant Hill               Y
  106182                 2                10    Pleasant Hill               Y
  106202                 1                10    Pleasant Hill               Y
  106206                 1                 6    Pleasant Hill               Y
  106216                 2                10    Pleasant Hill               Y
  106218                79                 9    Pleasant Hill               Y
  106253                 1                 9    Pleasant Hill               Y
  106278                 3                 8    Pleasant Hill               Y
  106305                 1                10    Pleasant Hill               Y
  106326                 1                 9    Pleasant Hill               Y
  106328                32                 8    Pleasant Hill               Y
  106331                 1                10    Pleasant Hill               Y
  106359                 2                10    Pleasant Hill               Y
  106389                 1                10    Pleasant Hill               Y
  106418                11                10    Pleasant Hill               Y
  106434                 1                 9    Pleasant Hill               Y
  106441                 3                10    Pleasant Hill               Y
  106464                 1                 9    Pleasant Hill               Y
  106468                 1                10    Pleasant Hill               Y
  106474                 3                10    Pleasant Hill               Y
  106526                 1                10    Pleasant Hill               Y
  106530                 2                10    Pleasant Hill               Y
  134812                 2                10          Belmont               Y
  134815                 2                10          Belmont               Y
  134820                 6                10          Belmont               Y
  134822                 1                10          Belmont               Y
  134825                 6                 9          Belmont               Y
  134826                 2                 8          Belmont               Y
  134827                 7                10          Belmont               Y
  134829                11                10          Belmont               Y
                                     Hotel Name-Long_PL Shuttle Service_PL
  105802                      HYATT house Pleasant Hill                  Y
  105803                      HYATT house Pleasant Hill                  Y
  105805                      HYATT house Pleasant Hill                  Y
  105814                      HYATT house Pleasant Hill                  Y
  105819                      HYATT house Pleasant Hill                  Y
  105848                      HYATT house Pleasant Hill                  Y
  105849                      HYATT house Pleasant Hill                  Y
  105908                      HYATT house Pleasant Hill                  Y
  105917                      HYATT house Pleasant Hill                  Y
  105920                      HYATT house Pleasant Hill                  Y
  105922                      HYATT house Pleasant Hill                  Y
  105930                      HYATT house Pleasant Hill                  Y
  105935                      HYATT house Pleasant Hill                  Y
  105961                      HYATT house Pleasant Hill                  Y
  105983                      HYATT house Pleasant Hill                  Y
  106003                      HYATT house Pleasant Hill                  Y
  106007                      HYATT house Pleasant Hill                  Y
  106031                      HYATT house Pleasant Hill                  Y
  106033                      HYATT house Pleasant Hill                  Y
  106040                      HYATT house Pleasant Hill                  Y
  106043                      HYATT house Pleasant Hill                  Y
  106051                      HYATT house Pleasant Hill                  Y
  106058                      HYATT house Pleasant Hill                  Y
  106065                      HYATT house Pleasant Hill                  Y
  106083                      HYATT house Pleasant Hill                  Y
  106104                      HYATT house Pleasant Hill                  Y
  106116                      HYATT house Pleasant Hill                  Y
  106161                      HYATT house Pleasant Hill                  Y
  106180                      HYATT house Pleasant Hill                  Y
  106182                      HYATT house Pleasant Hill                  Y
  106202                      HYATT house Pleasant Hill                  Y
  106206                      HYATT house Pleasant Hill                  Y
  106216                      HYATT house Pleasant Hill                  Y
  106218                      HYATT house Pleasant Hill                  Y
  106253                      HYATT house Pleasant Hill                  Y
  106278                      HYATT house Pleasant Hill                  Y
  106305                      HYATT house Pleasant Hill                  Y
  106326                      HYATT house Pleasant Hill                  Y
  106328                      HYATT house Pleasant Hill                  Y
  106331                      HYATT house Pleasant Hill                  Y
  106359                      HYATT house Pleasant Hill                  Y
  106389                      HYATT house Pleasant Hill                  Y
  106418                      HYATT house Pleasant Hill                  Y
  106434                      HYATT house Pleasant Hill                  Y
  106441                      HYATT house Pleasant Hill                  Y
  106464                      HYATT house Pleasant Hill                  Y
  106468                      HYATT house Pleasant Hill                  Y
  106474                      HYATT house Pleasant Hill                  Y
  106526                      HYATT house Pleasant Hill                  Y
  106530                      HYATT house Pleasant Hill                  Y
  134812             HYATT house Belmont/Redwood Shores                  Y
  134815             HYATT house Belmont/Redwood Shores                  Y
  134820             HYATT house Belmont/Redwood Shores                  Y
  134822             HYATT house Belmont/Redwood Shores                  Y
  134825             HYATT house Belmont/Redwood Shores                  Y
  134826             HYATT house Belmont/Redwood Shores                  Y
  134827             HYATT house Belmont/Redwood Shores                  Y
  134829             HYATT house Belmont/Redwood Shores                  Y
  </code></pre>
  
  <p>Thanks in advance for time and effort!</p>