-13.76% is the change from 836 to 721
Calculation steps:
[( 721 - 836 ) ÷ 836] x 100 = -13.76%
Formula
Percentage change = [(721 - 836) / 836] x 100
Subtract the new number by the original number
721 - 836 = -115
-115 ÷ 836 = -0.1375598086124402
-0.1375598086124402 x 100 = -13.76%