103.43% is the change from 408 to 830
Calculation steps:
[( 830 - 408 ) ÷ 408] x 100 = 103.43%
Formula
Percentage change = [(830 - 408) / 408] x 100
Subtract the new number by the original number
830 - 408 = 422
422 ÷ 408 = 1.0343137254901962
1.0343137254901962 x 100 = 103.43%