Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $664 and you need to know how much will you save on your purchase if the discount is 30 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (664 x 30) / 100
Amount Saved = 19920 / 100
Amount Saved = $199.2 (answer).
In other words, a 30% discount for a purchase with an original price of $664 equals $199.2 (Amount Saved), so you'll end up paying 464.8.