558.73% is the change from 126 to 830
Calculation steps:
[( 830 - 126 ) ÷ 126] x 100 = 558.73%
Formula
Percentage change = [(830 - 126) / 126] x 100
Subtract the new number by the original number
830 - 126 = 704
704 ÷ 126 = 5.587301587301587
5.587301587301587 x 100 = 558.73%