-1.6% is the change from 500 to 492
Calculation steps:
[( 492 - 500 ) ÷ 500] x 100 = -1.6%
Formula
Percentage change = [(492 - 500) / 500] x 100
Subtract the new number by the original number
492 - 500 = -8
-8 ÷ 500 = -0.016
-0.016 x 100 = -1.6%
Example