17.9% is the change from 704 to 830
Calculation steps:
[( 830 - 704 ) ÷ 704] x 100 = 17.9%
Formula
Percentage change = [(830 - 704) / 704] x 100
Subtract the new number by the original number
830 - 704 = 126
126 ÷ 704 = 0.17897727272727273
0.17897727272727273 x 100 = 17.9%