57.09% is the change from 268 to 421
Calculation steps:
[( 421 - 268 ) ÷ 268] x 100 = 57.09%
Formula
Percentage change = [(421 - 268) / 268] x 100
Subtract the new number by the original number
421 - 268 = 153
153 ÷ 268 = 0.5708955223880597
0.5708955223880597 x 100 = 57.09%