268.79% is the change from 173 to 638
Calculation steps:
[( 638 - 173 ) ÷ 173] x 100 = 268.79%
Formula
Percentage change = [(638 - 173) / 173] x 100
Subtract the new number by the original number
638 - 173 = 465
465 ÷ 173 = 2.6878612716763004
2.6878612716763004 x 100 = 268.79%