-22.26% is the change from 638 to 496
Calculation steps:
[( 496 - 638 ) ÷ 638] x 100 = -22.26%
Formula
Percentage change = [(496 - 638) / 638] x 100
Subtract the new number by the original number
496 - 638 = -142
-142 ÷ 638 = -0.2225705329153605
-0.2225705329153605 x 100 = -22.26%