Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $424 and you need to know how much will you save on your purchase if the discount is 81 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (424 x 81) / 100
Amount Saved = 34344 / 100
Amount Saved = $343.44 (answer).
In other words, a 81% discount for a purchase with an original price of $424 equals $343.44 (Amount Saved), so you'll end up paying 80.56.