-6.19% is the change from 501 to 470
Calculation steps:
[( 470 - 501 ) ÷ 501] x 100 = -6.19%
Formula
Percentage change = [(470 - 501) / 501] x 100
Subtract the new number by the original number
470 - 501 = -31
-31 ÷ 501 = -0.06187624750499002
-0.06187624750499002 x 100 = -6.19%