31.03% is the change from 680 to 891
Calculation steps:
[( 891 - 680 ) ÷ 680] x 100 = 31.03%
Formula
Percentage change = [(891 - 680) / 680] x 100
Subtract the new number by the original number
891 - 680 = 211
211 ÷ 680 = 0.31029411764705883
0.31029411764705883 x 100 = 31.03%