Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $672 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 = (672 x 81) / 100
Amount Saved = 54432 / 100
Amount Saved = $544.32 (answer).
In other words, a 81% discount for a purchase with an original price of $672 equals $544.32 (Amount Saved), so you'll end up paying 127.68.