-39.73% is the change from 818 to 493
Calculation steps:
[( 493 - 818 ) ÷ 818] x 100 = -39.73%
Formula
Percentage change = [(493 - 818) / 818] x 100
Subtract the new number by the original number
493 - 818 = -325
-325 ÷ 818 = -0.3973105134474328
-0.3973105134474328 x 100 = -39.73%