-3.11% is the change from 837 to 811
Calculation steps:
[( 811 - 837 ) ÷ 837] x 100 = -3.11%
Formula
Percentage change = [(811 - 837) / 837] x 100
Subtract the new number by the original number
811 - 837 = -26
-26 ÷ 837 = -0.03106332138590203
-0.03106332138590203 x 100 = -3.11%