Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $438 and you need to know how much will you save on your purchase if the discount is 89 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (438 x 89) / 100
Amount Saved = 38982 / 100
Amount Saved = $389.82 (answer).
In other words, a 89% discount for a purchase with an original price of $438 equals $389.82 (Amount Saved), so you'll end up paying 48.18.