title: Get the percentage of a number for width
body: <p>I am creating a horizontal bar chart with html/css/php. The first value is supposed to be 100% and will have a width of 425px. Every value after that (which is lower) needs to have it's width calculated as a percentage of 425px.</p>
  
  <p>So say the first value is 63 and gets a width of 425px (100%). I need to figure out the next's width if the next is 50, then 31, 27 and so on...</p>
  
  <p>I'm fine with markup, etc. it's the math calculation I'm trying to get my head around.</p>