actual yield and theoretical yield are usually different. the percentage yield of product = actual yield / theoretical yield x 100% the theoretical yield is 53.8 g and percentage yield - 73.6 % from the theoretical yield only 73.6 % of that amount is in the actual yield therefore actual yield is 73.6 % of 53.8 g actual yield - 53.8 x 73.6% = 39.6 g actual yield is 39.6 g