51.87% is the change from 268 to 407
Calculation steps:
[( 407 - 268 ) ÷ 268] x 100 = 51.87%
Formula
Percentage change = [(407 - 268) / 268] x 100
Subtract the new number by the original number
407 - 268 = 139
139 ÷ 268 = 0.5186567164179104
0.5186567164179104 x 100 = 51.87%