Percentage Discount given an Original Price of $500 and a Sale Price of $360

Discount Rate = 1 –  
Discount Rate = 1 – 0.72
Discount Rate = 0.28
0.28 Converted to a Percent: 0.28 = 28%
Percentage Discount given an Original Price of $500 and a Sale Price of $360 = 28%
Note: Reduction in Price = $500 – $360 = $140