-22.16% is the change from 501 to 390
Calculation steps:
[( 390 - 501 ) ÷ 501] x 100 = -22.16%
Formula
Percentage change = [(390 - 501) / 501] x 100
Subtract the new number by the original number
390 - 501 = -111
-111 ÷ 501 = -0.2215568862275449
-0.2215568862275449 x 100 = -22.16%