-60.91% is the change from 811 to 317
Calculation steps:
[( 317 - 811 ) ÷ 811] x 100 = -60.91%
Formula
Percentage change = [(317 - 811) / 811] x 100
Subtract the new number by the original number
317 - 811 = -494
-494 ÷ 811 = -0.6091245376078915
-0.6091245376078915 x 100 = -60.91%