-24.39% is the change from 824 to 623
Calculation steps:
[( 623 - 824 ) ÷ 824] x 100 = -24.39%
Formula
Percentage change = [(623 - 824) / 824] x 100
Subtract the new number by the original number
623 - 824 = -201
-201 ÷ 824 = -0.24393203883495146
-0.24393203883495146 x 100 = -24.39%