31.48% is the change from 324 to 426
Calculation steps:
[( 426 - 324 ) ÷ 324] x 100 = 31.48%
Formula
Percentage change = [(426 - 324) / 324] x 100
Subtract the new number by the original number
426 - 324 = 102
102 ÷ 324 = 0.3148148148148148
0.3148148148148148 x 100 = 31.48%