Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $648 and you need to know how much will you save on your purchase if the discount is 15 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (648 x 15) / 100
Amount Saved = 9720 / 100
Amount Saved = $97.2 (answer).
In other words, a 15% discount for a purchase with an original price of $648 equals $97.2 (Amount Saved), so you'll end up paying 550.8.