-6.46% is the change from 867 to 811
Calculation steps:
[( 811 - 867 ) ÷ 867] x 100 = -6.46%
Formula
Percentage change = [(811 - 867) / 867] x 100
Subtract the new number by the original number
811 - 867 = -56
-56 ÷ 867 = -0.06459054209919261
-0.06459054209919261 x 100 = -6.46%