Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $1000 and you need to know how much will you save on your purchase if the discount is 79 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (1000 x 79) / 100
Amount Saved = 79000 / 100
Amount Saved = $790 (answer).
In other words, a 79% discount for a purchase with an original price of $1000 equals $790 (Amount Saved), so you'll end up paying 210.