-24.27% is the change from 824 to 624
Calculation steps:
[( 624 - 824 ) ÷ 824] x 100 = -24.27%
Formula
Percentage change = [(624 - 824) / 824] x 100
Subtract the new number by the original number
624 - 824 = -200
-200 ÷ 824 = -0.24271844660194175
-0.24271844660194175 x 100 = -24.27%