-22.86% is the change from 643 to 496
Calculation steps:
[( 496 - 643 ) ÷ 643] x 100 = -22.86%
Formula
Percentage change = [(496 - 643) / 643] x 100
Subtract the new number by the original number
496 - 643 = -147
-147 ÷ 643 = -0.2286158631415241
-0.2286158631415241 x 100 = -22.86%