Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $400 and you need to know how much will you save on your purchase if the discount is 31 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (400 x 31) / 100
Amount Saved = 12400 / 100
Amount Saved = $124 (answer).
In other words, a 31% discount for a purchase with an original price of $400 equals $124 (Amount Saved), so you'll end up paying 276.