23.15% is the change from 674 to 830
Calculation steps:
[( 830 - 674 ) ÷ 674] x 100 = 23.15%
Formula
Percentage change = [(830 - 674) / 674] x 100
Subtract the new number by the original number
830 - 674 = 156
156 ÷ 674 = 0.2314540059347181
0.2314540059347181 x 100 = 23.15%