Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $4989 and you need to know how much will you save on your purchase if the discount is 80 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (4989 x 80) / 100
Amount Saved = 399120 / 100
Amount Saved = $3991.2 (answer).
In other words, a 80% discount for a purchase with an original price of $4989 equals $3991.2 (Amount Saved), so you'll end up paying 997.8.