104.43% is the change from 406 to 830
Calculation steps:
[( 830 - 406 ) ÷ 406] x 100 = 104.43%
Formula
Percentage change = [(830 - 406) / 406] x 100
Subtract the new number by the original number
830 - 406 = 424
424 ÷ 406 = 1.0443349753694582
1.0443349753694582 x 100 = 104.43%