Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $159 and you need to know how much will you save on your purchase if the discount is 91 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (159 x 91) / 100
Amount Saved = 14469 / 100
Amount Saved = $144.69 (answer).
In other words, a 91% discount for a purchase with an original price of $159 equals $144.69 (Amount Saved), so you'll end up paying 14.31.