Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $820 and you need to know how much will you save on your purchase if the discount is 37 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (820 x 37) / 100
Amount Saved = 30340 / 100
Amount Saved = $303.4 (answer).
In other words, a 37% discount for a purchase with an original price of $820 equals $303.4 (Amount Saved), so you'll end up paying 516.6.