-8.6% is the change from 500 to 457
Calculation steps:
[( 457 - 500 ) ÷ 500] x 100 = -8.6%
Formula
Percentage change = [(457 - 500) / 500] x 100
Subtract the new number by the original number
457 - 500 = -43
-43 ÷ 500 = -0.086
-0.086 x 100 = -8.6%
Example