Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $70 and you need to know how much will you save on your purchase if the discount is 64 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (70 x 64) / 100
Amount Saved = 4480 / 100
Amount Saved = $44.8 (answer).
In other words, a 64% discount for a purchase with an original price of $70 equals $44.8 (Amount Saved), so you'll end up paying 25.2.