314.19% is the change from 155 to 642
Calculation steps:
[( 642 - 155 ) ÷ 155] x 100 = 314.19%
Formula
Percentage change = [(642 - 155) / 155] x 100
Subtract the new number by the original number
642 - 155 = 487
487 ÷ 155 = 3.141935483870968
3.141935483870968 x 100 = 314.19%