-3.47% is the change from 836 to 807
Calculation steps:
[( 807 - 836 ) ÷ 836] x 100 = -3.47%
Formula
Percentage change = [(807 - 836) / 836] x 100
Subtract the new number by the original number
807 - 836 = -29
-29 ÷ 836 = -0.034688995215311005
-0.034688995215311005 x 100 = -3.47%