-74.48% is the change from 823 to 210
Calculation steps:
[( 210 - 823 ) ÷ 823] x 100 = -74.48%
Formula
Percentage change = [(210 - 823) / 823] x 100
Subtract the new number by the original number
210 - 823 = -613
-613 ÷ 823 = -0.7448359659781288
-0.7448359659781288 x 100 = -74.48%