-60.82% is the change from 809 to 317
Calculation steps:
[( 317 - 809 ) ÷ 809] x 100 = -60.82%
Formula
Percentage change = [(317 - 809) / 809] x 100
Subtract the new number by the original number
317 - 809 = -492
-492 ÷ 809 = -0.6081582200247219
-0.6081582200247219 x 100 = -60.82%