Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $1688 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 = (1688 x 81) / 100
Amount Saved = 136728 / 100
Amount Saved = $1367.28 (answer).
In other words, a 81% discount for a purchase with an original price of $1688 equals $1367.28 (Amount Saved), so you'll end up paying 320.72.