Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $250 and you need to know how much will you save on your purchase if the discount is 4 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (250 x 4) / 100
Amount Saved = 1000 / 100
Amount Saved = $10 (answer).
In other words, a 4% discount for a purchase with an original price of $250 equals $10 (Amount Saved), so you'll end up paying 240.