-22.21% is the change from 824 to 641
Calculation steps:
[( 641 - 824 ) ÷ 824] x 100 = -22.21%
Formula
Percentage change = [(641 - 824) / 824] x 100
Subtract the new number by the original number
641 - 824 = -183
-183 ÷ 824 = -0.2220873786407767
-0.2220873786407767 x 100 = -22.21%