-15.03% is the change from 499 to 424
Calculation steps:
[( 424 - 499 ) ÷ 499] x 100 = -15.03%
Formula
Percentage change = [(424 - 499) / 499] x 100
Subtract the new number by the original number
424 - 499 = -75
-75 ÷ 499 = -0.15030060120240482
-0.15030060120240482 x 100 = -15.03%