-19.56% is the change from 501 to 403
Calculation steps:
[( 403 - 501 ) ÷ 501] x 100 = -19.56%
Formula
Percentage change = [(403 - 501) / 501] x 100
Subtract the new number by the original number
403 - 501 = -98
-98 ÷ 501 = -0.19560878243512975
-0.19560878243512975 x 100 = -19.56%