-0.73% is the change from 817 to 811
Calculation steps:
[( 811 - 817 ) ÷ 817] x 100 = -0.73%
Formula
Percentage change = [(811 - 817) / 817] x 100
Subtract the new number by the original number
811 - 817 = -6
-6 ÷ 817 = -0.0073439412484700125
-0.0073439412484700125 x 100 = -0.73%