Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $630 and you need to know how much will you save on your purchase if the discount is 87 percent.
Solution:
Amount Saved = Original Price x Discount in Percent / 100
Amount Saved = (630 x 87) / 100
Amount Saved = 54810 / 100
Amount Saved = $548.1 (answer).
In other words, a 87% discount for a purchase with an original price of $630 equals $548.1 (Amount Saved), so you'll end up paying 81.9.