39.57% is the change from 326 to 455
Calculation steps:
[( 455 - 326 ) ÷ 326] x 100 = 39.57%
Formula
Percentage change = [(455 - 326) / 326] x 100
Subtract the new number by the original number
455 - 326 = 129
129 ÷ 326 = 0.39570552147239263
0.39570552147239263 x 100 = 39.57%