-83.11% is the change from 811 to 137
Calculation steps:
[( 137 - 811 ) ÷ 811] x 100 = -83.11%
Formula
Percentage change = [(137 - 811) / 811] x 100
Subtract the new number by the original number
137 - 811 = -674
-674 ÷ 811 = -0.8310727496917386
-0.8310727496917386 x 100 = -83.11%