-39% is the change from 818 to 499
Calculation steps:
[( 499 - 818 ) ÷ 818] x 100 = -39%
Formula
Percentage change = [(499 - 818) / 818] x 100
Subtract the new number by the original number
499 - 818 = -319
-319 ÷ 818 = -0.3899755501222494
-0.3899755501222494 x 100 = -39%