title: Can Pivot Table perform operations comparing two field?
body: <p>I have a table that has two category columns, a column for number started and a column for number finished.  I'd like to roll up by one category column and calculate a percentage finished in a pivot table (rather than array formulae).</p>
  
  <p>Imagine my data looks like this:</p>
  
  <pre><code>Date - School - Starters - Finishers
  7/1    USC      100        25
  7/1    UCLA     200        50
  7/2    USC      250        100
  7/2    UCLA     200        100
  </code></pre>
  
  <p>I want my pivot table to look like this</p>
  
  <pre><code>Date - Finish rate
  7/1    25%
  7/2    44%
  </code></pre>
  
  <p>But when I go into Value Field Settings to switch to a calculation, I can't figure how to get the column comparison to happen.</p>