-22.69% is the change from 824 to 637
Calculation steps:
[( 637 - 824 ) ÷ 824] x 100 = -22.69%
Formula
Percentage change = [(637 - 824) / 824] x 100
Subtract the new number by the original number
637 - 824 = -187
-187 ÷ 824 = -0.22694174757281554
-0.22694174757281554 x 100 = -22.69%