Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $639 and you need to know how much will you save on your purchase if the discount is 71 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (639 x 71) / 100
Amount Saved = 45369 / 100
Amount Saved = $453.69 (answer).
In other words, a 71% discount for a purchase with an original price of $639 equals $453.69 (Amount Saved), so you'll end up paying 185.31.