271.1% is the change from 173 to 642
Calculation steps:
[( 642 - 173 ) ÷ 173] x 100 = 271.1%
Formula
Percentage change = [(642 - 173) / 173] x 100
Subtract the new number by the original number
642 - 173 = 469
469 ÷ 173 = 2.7109826589595376
2.7109826589595376 x 100 = 271.1%