139.93% is the change from 268 to 643
Calculation steps:
[( 643 - 268 ) ÷ 268] x 100 = 139.93%
Formula
Percentage change = [(643 - 268) / 268] x 100
Subtract the new number by the original number
643 - 268 = 375
375 ÷ 268 = 1.3992537313432836
1.3992537313432836 x 100 = 139.93%