-97.08% is the change from 823 to 24
Calculation steps:
[( 24 - 823 ) ÷ 823] x 100 = -97.08%
Formula
Percentage change = [(24 - 823) / 823] x 100
Subtract the new number by the original number
24 - 823 = -799
-799 ÷ 823 = -0.9708383961117861
-0.9708383961117861 x 100 = -97.08%