-21.76% is the change from 501 to 392
Calculation steps:
[( 392 - 501 ) ÷ 501] x 100 = -21.76%
Formula
Percentage change = [(392 - 501) / 501] x 100
Subtract the new number by the original number
392 - 501 = -109
-109 ÷ 501 = -0.21756487025948104
-0.21756487025948104 x 100 = -21.76%