-8.13% is the change from 836 to 768
Calculation steps:
[( 768 - 836 ) ÷ 836] x 100 = -8.13%
Formula
Percentage change = [(768 - 836) / 836] x 100
Subtract the new number by the original number
768 - 836 = -68
-68 ÷ 836 = -0.08133971291866028
-0.08133971291866028 x 100 = -8.13%