-22.41% is the change from 812 to 630
Calculation steps:
[( 630 - 812 ) ÷ 812] x 100 = -22.41%
Formula
Percentage change = [(630 - 812) / 812] x 100
Subtract the new number by the original number
630 - 812 = -182
-182 ÷ 812 = -0.22413793103448276
-0.22413793103448276 x 100 = -22.41%