-22.03% is the change from 649 to 506
Calculation steps:
[( 506 - 649 ) ÷ 649] x 100 = -22.03%
Formula
Percentage change = [(506 - 649) / 649] x 100
Subtract the new number by the original number
506 - 649 = -143
-143 ÷ 649 = -0.22033898305084745
-0.22033898305084745 x 100 = -22.03%