-3.23% is the change from 836 to 809
Calculation steps:
[( 809 - 836 ) ÷ 836] x 100 = -3.23%
Formula
Percentage change = [(809 - 836) / 836] x 100
Subtract the new number by the original number
809 - 836 = -27
-27 ÷ 836 = -0.03229665071770335
-0.03229665071770335 x 100 = -3.23%