Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $18 and you need to know how much will you save on your purchase if the discount is 57 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (18 x 57) / 100
Amount Saved = 1026 / 100
Amount Saved = $10.26 (answer).
In other words, a 57% discount for a purchase with an original price of $18 equals $10.26 (Amount Saved), so you'll end up paying 7.74.