Games that usually sell for $36.40 were on sale for $27.30. what percent off are they? with work !

(original number - new number) / original number* 100
(36.40 - 27.30) / 36.40 =
9.10 / 35.40 = 0.25
to turn to a percent, multiply by 100 = (0.25 x 100) = 25%