-39.29% is the change from 817 to 496
Calculation steps:
[( 496 - 817 ) ÷ 817] x 100 = -39.29%
Formula
Percentage change = [(496 - 817) / 817] x 100
Subtract the new number by the original number
496 - 817 = -321
-321 ÷ 817 = -0.3929008567931457
-0.3929008567931457 x 100 = -39.29%