-23.22% is the change from 646 to 496
Calculation steps:
[( 496 - 646 ) ÷ 646] x 100 = -23.22%
Formula
Percentage change = [(496 - 646) / 646] x 100
Subtract the new number by the original number
496 - 646 = -150
-150 ÷ 646 = -0.23219814241486067
-0.23219814241486067 x 100 = -23.22%