title: Average percent
body: <p>I'm dealing with some math problems here. We have the average sale and loss number in 3 stores.</p>
  
  <pre>
  Site     SALE     LOSS          % LOSS
  -------------------------------------------
  Store 1  474750   336740    70,92996314   (LOSS*100)/SALE
  Store 2  321920   247810    76,97875249   
  Store 3  149240   118440    79,36210131
  -------------------------------------------
  Total    945910   702990    74,31890983
  </pre>
  
  <p>If i sum the loss percentages of store 1,2 and 3 i get an average of 75.75.
  But when i calculate the total SALE and LOSS and calculate the percentage LOSS i get 74.31?</p>
  
  <p>Shouldent the numbers match? Or is this the wrong way?</p>
  
  <p>Thank you for all answers!</p>