Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $3978 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 = (3978 x 20) / 100
Amount Saved = 79560 / 100
Amount Saved = $795.6 (answer).
In other words, a 20% discount for a purchase with an original price of $3978 equals $795.6 (Amount Saved), so you'll end up paying 3182.4.