Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $809 and you need to know how much will you save on your purchase if the discount is 42 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (809 x 42) / 100
Amount Saved = 33978 / 100
Amount Saved = $339.78 (answer).
In other words, a 42% discount for a purchase with an original price of $809 equals $339.78 (Amount Saved), so you'll end up paying 469.22.