-4.31% is the change from 836 to 800
Calculation steps:
[( 800 - 836 ) ÷ 836] x 100 = -4.31%
Formula
Percentage change = [(800 - 836) / 836] x 100
Subtract the new number by the original number
800 - 836 = -36
-36 ÷ 836 = -0.0430622009569378
-0.0430622009569378 x 100 = -4.31%