67.91% is the change from 268 to 450
Calculation steps:
[( 450 - 268 ) ÷ 268] x 100 = 67.91%
Formula
Percentage change = [(450 - 268) / 268] x 100
Subtract the new number by the original number
450 - 268 = 182
182 ÷ 268 = 0.6791044776119403
0.6791044776119403 x 100 = 67.91%