-22.55% is the change from 838 to 649
Calculation steps:
[( 649 - 838 ) ÷ 838] x 100 = -22.55%
Formula
Percentage change = [(649 - 838) / 838] x 100
Subtract the new number by the original number
649 - 838 = -189
-189 ÷ 838 = -0.22553699284009546
-0.22553699284009546 x 100 = -22.55%