68.28% is the change from 268 to 451
Calculation steps:
[( 451 - 268 ) ÷ 268] x 100 = 68.28%
Formula
Percentage change = [(451 - 268) / 268] x 100
Subtract the new number by the original number
451 - 268 = 183
183 ÷ 268 = 0.6828358208955224
0.6828358208955224 x 100 = 68.28%