27.5% is the change from 651 to 830
Calculation steps:
[( 830 - 651 ) ÷ 651] x 100 = 27.5%
Formula
Percentage change = [(830 - 651) / 651] x 100
Subtract the new number by the original number
830 - 651 = 179
179 ÷ 651 = 0.2749615975422427
0.2749615975422427 x 100 = 27.5%