18.97% is the change from 680 to 809
Calculation steps:
[( 809 - 680 ) ÷ 680] x 100 = 18.97%
Formula
Percentage change = [(809 - 680) / 680] x 100
Subtract the new number by the original number
809 - 680 = 129
129 ÷ 680 = 0.18970588235294117
0.18970588235294117 x 100 = 18.97%