-3.81% is the change from 499 to 480
Calculation steps:
[( 480 - 499 ) ÷ 499] x 100 = -3.81%
Formula
Percentage change = [(480 - 499) / 499] x 100
Subtract the new number by the original number
480 - 499 = -19
-19 ÷ 499 = -0.03807615230460922
-0.03807615230460922 x 100 = -3.81%