-20.96% is the change from 501 to 396
Calculation steps:
[( 396 - 501 ) ÷ 501] x 100 = -20.96%
Formula
Percentage change = [(396 - 501) / 501] x 100
Subtract the new number by the original number
396 - 501 = -105
-105 ÷ 501 = -0.20958083832335328
-0.20958083832335328 x 100 = -20.96%