29% is the change from 331 to 427
Calculation steps:
[( 427 - 331 ) ÷ 331] x 100 = 29%
Formula
Percentage change = [(427 - 331) / 331] x 100
Subtract the new number by the original number
427 - 331 = 96
96 ÷ 331 = 0.29003021148036257
0.29003021148036257 x 100 = 29%