23.55% is the change from 671 to 829
Calculation steps:
[( 829 - 671 ) ÷ 671] x 100 = 23.55%
Formula
Percentage change = [(829 - 671) / 671] x 100
Subtract the new number by the original number
829 - 671 = 158
158 ÷ 671 = 0.23546944858420268
0.23546944858420268 x 100 = 23.55%