Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $639 and you need to know how much will you save on your purchase if the discount is 75 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (639 x 75) / 100
Amount Saved = 47925 / 100
Amount Saved = $479.25 (answer).
In other words, a 75% discount for a purchase with an original price of $639 equals $479.25 (Amount Saved), so you'll end up paying 159.75.