430.58% is the change from 121 to 642
Calculation steps:
[( 642 - 121 ) ÷ 121] x 100 = 430.58%
Formula
Percentage change = [(642 - 121) / 121] x 100
Subtract the new number by the original number
642 - 121 = 521
521 ÷ 121 = 4.305785123966942
4.305785123966942 x 100 = 430.58%