-4.02% is the change from 871 to 836
Calculation steps:
[( 836 - 871 ) ÷ 871] x 100 = -4.02%
Formula
Percentage change = [(836 - 871) / 871] x 100
Subtract the new number by the original number
836 - 871 = -35
-35 ÷ 871 = -0.040183696900114814
-0.040183696900114814 x 100 = -4.02%