Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $64 and you need to know how much will you save on your purchase if the discount is 18 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (64 x 18) / 100
Amount Saved = 1152 / 100
Amount Saved = $11.52 (answer).
In other words, a 18% discount for a purchase with an original price of $64 equals $11.52 (Amount Saved), so you'll end up paying 52.48.