Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $390 and you need to know how much will you save on your purchase if the discount is 25 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (390 x 25) / 100
Amount Saved = 9750 / 100
Amount Saved = $97.5 (answer).
In other words, a 25% discount for a purchase with an original price of $390 equals $97.5 (Amount Saved), so you'll end up paying 292.5.