Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $540 and you need to know how much will you save on your purchase if the discount is 85 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (540 x 85) / 100
Amount Saved = 45900 / 100
Amount Saved = $459 (answer).
In other words, a 85% discount for a purchase with an original price of $540 equals $459 (Amount Saved), so you'll end up paying 81.