-39.93% is the change from 824 to 495
Calculation steps:
[( 495 - 824 ) ÷ 824] x 100 = -39.93%
Formula
Percentage change = [(495 - 824) / 824] x 100
Subtract the new number by the original number
495 - 824 = -329
-329 ÷ 824 = -0.39927184466019416
-0.39927184466019416 x 100 = -39.93%