Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $538 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 = (538 x 85) / 100
Amount Saved = 45730 / 100
Amount Saved = $457.3 (answer).
In other words, a 85% discount for a purchase with an original price of $538 equals $457.3 (Amount Saved), so you'll end up paying 80.7.