--- node--deal.tpl.php	2012-01-06 23:46:56.158121555 -0600
+++ node--deal.tpl.php	2012-01-06 23:47:02.824702703 -0600
@@ -91,7 +91,7 @@
 hide($content['field_store_refer']);
 
 // create discount element
-$discount = 1 - ($content['product:commerce_price']['#items'][0]['amount']/$content['product:field_or_price']['#items'][0]['amount'] * 100);
+$discount = (1 - $content['product:commerce_price']['#items'][0]['amount']/$content['product:field_or_price']['#items'][0]['amount']) * 100;
 $currency = commerce_currency_load($content['product:commerce_price']['#items'][0]['currency_code']);
 $discount = commerce_currency_round(abs($discount), $currency);