585.95% is the change from 121 to 830
Calculation steps:
[( 830 - 121 ) ÷ 121] x 100 = 585.95%
Formula
Percentage change = [(830 - 121) / 121] x 100
Subtract the new number by the original number
830 - 121 = 709
709 ÷ 121 = 5.859504132231405
5.859504132231405 x 100 = 585.95%