Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $512 and you need to know how much will you save on your purchase if the discount is 84 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (512 x 84) / 100
Amount Saved = 43008 / 100
Amount Saved = $430.08 (answer).
In other words, a 84% discount for a purchase with an original price of $512 equals $430.08 (Amount Saved), so you'll end up paying 81.92.