-22% is the change from 809 to 631
Calculation steps:
[( 631 - 809 ) ÷ 809] x 100 = -22%
Formula
Percentage change = [(631 - 809) / 809] x 100
Subtract the new number by the original number
631 - 809 = -178
-178 ÷ 809 = -0.2200247218788628
-0.2200247218788628 x 100 = -22%