-22.29% is the change from 812 to 631
Calculation steps:
[( 631 - 812 ) ÷ 812] x 100 = -22.29%
Formula
Percentage change = [(631 - 812) / 812] x 100
Subtract the new number by the original number
631 - 812 = -181
-181 ÷ 812 = -0.2229064039408867
-0.2229064039408867 x 100 = -22.29%