254.7% is the change from 181 to 642
Calculation steps:
[( 642 - 181 ) ÷ 181] x 100 = 254.7%
Formula
Percentage change = [(642 - 181) / 181] x 100
Subtract the new number by the original number
642 - 181 = 461
461 ÷ 181 = 2.546961325966851
2.546961325966851 x 100 = 254.7%