-20.54% is the change from 818 to 650
Calculation steps:
[( 650 - 818 ) ÷ 818] x 100 = -20.54%
Formula
Percentage change = [(650 - 818) / 818] x 100
Subtract the new number by the original number
650 - 818 = -168
-168 ÷ 818 = -0.20537897310513448
-0.20537897310513448 x 100 = -20.54%