-2.99% is the change from 835 to 810
Calculation steps:
[( 810 - 835 ) ÷ 835] x 100 = -2.99%
Formula
Percentage change = [(810 - 835) / 835] x 100
Subtract the new number by the original number
810 - 835 = -25
-25 ÷ 835 = -0.029940119760479042
-0.029940119760479042 x 100 = -2.99%