-0.6% is the change from 836 to 831
Calculation steps:
[( 831 - 836 ) ÷ 836] x 100 = -0.6%
Formula
Percentage change = [(831 - 836) / 836] x 100
Subtract the new number by the original number
831 - 836 = -5
-5 ÷ 836 = -0.005980861244019139
-0.005980861244019139 x 100 = -0.6%