Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $1280 and you need to know how much will you save on your purchase if the discount is 87 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (1280 x 87) / 100
Amount Saved = 111360 / 100
Amount Saved = $1113.6 (answer).
In other words, a 87% discount for a purchase with an original price of $1280 equals $1113.6 (Amount Saved), so you'll end up paying 166.4.