Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $549 and you need to know how much will you save on your purchase if the discount is 20 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (549 x 20) / 100
Amount Saved = 10980 / 100
Amount Saved = $109.8 (answer).
In other words, a 20% discount for a purchase with an original price of $549 equals $109.8 (Amount Saved), so you'll end up paying 439.2.