69.78% is the change from 268 to 455
Calculation steps:
[( 455 - 268 ) ÷ 268] x 100 = 69.78%
Formula
Percentage change = [(455 - 268) / 268] x 100
Subtract the new number by the original number
455 - 268 = 187
187 ÷ 268 = 0.6977611940298507
0.6977611940298507 x 100 = 69.78%