21% is the change from 824 to 997
Calculation steps:
[( 997 - 824 ) ÷ 824] x 100 = 21%
Formula
Percentage change = [(997 - 824) / 824] x 100
Subtract the new number by the original number
997 - 824 = 173
173 ÷ 824 = 0.2099514563106796
0.2099514563106796 x 100 = 21%