428.66% is the change from 157 to 830
Calculation steps:
[( 830 - 157 ) ÷ 157] x 100 = 428.66%
Formula
Percentage change = [(830 - 157) / 157] x 100
Subtract the new number by the original number
830 - 157 = 673
673 ÷ 157 = 4.286624203821656
4.286624203821656 x 100 = 428.66%