-2.87% is the change from 835 to 811
Calculation steps:
[( 811 - 835 ) ÷ 835] x 100 = -2.87%
Formula
Percentage change = [(811 - 835) / 835] x 100
Subtract the new number by the original number
811 - 835 = -24
-24 ÷ 835 = -0.02874251497005988
-0.02874251497005988 x 100 = -2.87%