Percentage Discount given an Original Price of $384 and a Sale Price of $240

Discount Rate = 1 –  
Discount Rate = 1 – 0.625
Discount Rate = 0.375
0.375 Converted to a Percent: 0.375 = 37.5%
Percentage Discount given an Original Price of $384 and a Sale Price of $240 = 37.5%
Note: Reduction in Price = $384 – $240 = $144