29.41% is the change from 680 to 880
Calculation steps:
[( 880 - 680 ) ÷ 680] x 100 = 29.41%
Formula
Percentage change = [(880 - 680) / 680] x 100
Subtract the new number by the original number
880 - 680 = 200
200 ÷ 680 = 0.29411764705882354
0.29411764705882354 x 100 = 29.41%