Calculate percentage of X, quick & simple.
Let's take a quick example here:
You have a Target coupon of $4020 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 = (4020 x 42) / 100
Amount Saved = 168840 / 100
Amount Saved = $1688.4 (answer).
In other words, a 42% discount for a purchase with an original price of $4020 equals $1688.4 (Amount Saved), so you'll end up paying 2331.6.