-39.68% is the change from 809 to 488
Calculation steps:
[( 488 - 809 ) ÷ 809] x 100 = -39.68%
Formula
Percentage change = [(488 - 809) / 809] x 100
Subtract the new number by the original number
488 - 809 = -321
-321 ÷ 809 = -0.3967861557478368
-0.3967861557478368 x 100 = -39.68%