-80.76% is the change from 811 to 156
Calculation steps:
[( 156 - 811 ) ÷ 811] x 100 = -80.76%
Formula
Percentage change = [(156 - 811) / 811] x 100
Subtract the new number by the original number
156 - 811 = -655
-655 ÷ 811 = -0.8076448828606658
-0.8076448828606658 x 100 = -80.76%