-13.03% is the change from 829 to 721
Calculation steps:
[( 721 - 829 ) ÷ 829] x 100 = -13.03%
Formula
Percentage change = [(721 - 829) / 829] x 100
Subtract the new number by the original number
721 - 829 = -108
-108 ÷ 829 = -0.13027744270205066
-0.13027744270205066 x 100 = -13.03%