421.49% is the change from 121 to 631
Calculation steps:
[( 631 - 121 ) ÷ 121] x 100 = 421.49%
Formula
Percentage change = [(631 - 121) / 121] x 100
Subtract the new number by the original number
631 - 121 = 510
510 ÷ 121 = 4.214876033057851
4.214876033057851 x 100 = 421.49%