-2.99% is the change from 836 to 811
Calculation steps:
[( 811 - 836 ) ÷ 836] x 100 = -2.99%
Formula
Percentage change = [(811 - 836) / 836] x 100
Subtract the new number by the original number
811 - 836 = -25
-25 ÷ 836 = -0.029904306220095694
-0.029904306220095694 x 100 = -2.99%