Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $70 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 = (70 x 57) / 100
Amount Saved = 3990 / 100
Amount Saved = $39.9 (answer).
In other words, a 57% discount for a purchase with an original price of $70 equals $39.9 (Amount Saved), so you'll end up paying 30.1.