29.75% is the change from 326 to 423
Calculation steps:
[( 423 - 326 ) ÷ 326] x 100 = 29.75%
Formula
Percentage change = [(423 - 326) / 326] x 100
Subtract the new number by the original number
423 - 326 = 97
97 ÷ 326 = 0.29754601226993865
0.29754601226993865 x 100 = 29.75%