31.15% is the change from 671 to 880
Calculation steps:
[( 880 - 671 ) ÷ 671] x 100 = 31.15%
Formula
Percentage change = [(880 - 671) / 671] x 100
Subtract the new number by the original number
880 - 671 = 209
209 ÷ 671 = 0.3114754098360656
0.3114754098360656 x 100 = 31.15%