-9.86% is the change from 811 to 731
Calculation steps:
[( 731 - 811 ) ÷ 811] x 100 = -9.86%
Formula
Percentage change = [(731 - 811) / 811] x 100
Subtract the new number by the original number
731 - 811 = -80
-80 ÷ 811 = -0.09864364981504316
-0.09864364981504316 x 100 = -9.86%