138.06% is the change from 268 to 638
Calculation steps:
[( 638 - 268 ) ÷ 268] x 100 = 138.06%
Formula
Percentage change = [(638 - 268) / 268] x 100
Subtract the new number by the original number
638 - 268 = 370
370 ÷ 268 = 1.3805970149253732
1.3805970149253732 x 100 = 138.06%