27.3% is the change from 326 to 415
Calculation steps:
[( 415 - 326 ) ÷ 326] x 100 = 27.3%
Formula
Percentage change = [(415 - 326) / 326] x 100
Subtract the new number by the original number
415 - 326 = 89
89 ÷ 326 = 0.27300613496932513
0.27300613496932513 x 100 = 27.3%