-38.35% is the change from 824 to 508
Calculation steps:
[( 508 - 824 ) ÷ 824] x 100 = -38.35%
Formula
Percentage change = [(508 - 824) / 824] x 100
Subtract the new number by the original number
508 - 824 = -316
-316 ÷ 824 = -0.38349514563106796
-0.38349514563106796 x 100 = -38.35%