-22.25% is the change from 818 to 636
Calculation steps:
[( 636 - 818 ) ÷ 818] x 100 = -22.25%
Formula
Percentage change = [(636 - 818) / 818] x 100
Subtract the new number by the original number
636 - 818 = -182
-182 ÷ 818 = -0.22249388753056235
-0.22249388753056235 x 100 = -22.25%