17.07% is the change from 709 to 830
Calculation steps:
[( 830 - 709 ) ÷ 709] x 100 = 17.07%
Formula
Percentage change = [(830 - 709) / 709] x 100
Subtract the new number by the original number
830 - 709 = 121
121 ÷ 709 = 0.17066290550070523
0.17066290550070523 x 100 = 17.07%