Percentage Discount given an Original Price of $12 and a Sale Price of $7.14

Discount Rate = 1 –  
Discount Rate = 1 – 0.595
Discount Rate = 0.405
0.405 Converted to a Percent: 0.405 = 40.5%
Percentage Discount given an Original Price of $12 and a Sale Price of $7.14 = 40.5%
Note: Reduction in Price = $12 – $7.14 = $4.86