13.24% is the change from 680 to 770
Calculation steps:
[( 770 - 680 ) ÷ 680] x 100 = 13.24%
Formula
Percentage change = [(770 - 680) / 680] x 100
Subtract the new number by the original number
770 - 680 = 90
90 ÷ 680 = 0.1323529411764706
0.1323529411764706 x 100 = 13.24%