-2.9% is the change from 861 to 836
Calculation steps:
[( 836 - 861 ) ÷ 861] x 100 = -2.9%
Formula
Percentage change = [(836 - 861) / 861] x 100
Subtract the new number by the original number
836 - 861 = -25
-25 ÷ 861 = -0.029036004645760744
-0.029036004645760744 x 100 = -2.9%