-3.15% is the change from 508 to 492
Calculation steps:
[( 492 - 508 ) ÷ 508] x 100 = -3.15%
Formula
Percentage change = [(492 - 508) / 508] x 100
Subtract the new number by the original number
492 - 508 = -16
-16 ÷ 508 = -0.031496062992125984
-0.031496062992125984 x 100 = -3.15%