421.14% is the change from 123 to 641
Calculation steps:
[( 641 - 123 ) ÷ 123] x 100 = 421.14%
Formula
Percentage change = [(641 - 123) / 123] x 100
Subtract the new number by the original number
641 - 123 = 518
518 ÷ 123 = 4.211382113821138
4.211382113821138 x 100 = 421.14%