-22.62% is the change from 641 to 496
Calculation steps:
[( 496 - 641 ) ÷ 641] x 100 = -22.62%
Formula
Percentage change = [(496 - 641) / 641] x 100
Subtract the new number by the original number
496 - 641 = -145
-145 ÷ 641 = -0.22620904836193448
-0.22620904836193448 x 100 = -22.62%