-23.42% is the change from 824 to 631
Calculation steps:
[( 631 - 824 ) ÷ 824] x 100 = -23.42%
Formula
Percentage change = [(631 - 824) / 824] x 100
Subtract the new number by the original number
631 - 824 = -193
-193 ÷ 824 = -0.2342233009708738
-0.2342233009708738 x 100 = -23.42%