31.14% is the change from 334 to 438
Calculation steps:
[( 438 - 334 ) ÷ 334] x 100 = 31.14%
Formula
Percentage change = [(438 - 334) / 334] x 100
Subtract the new number by the original number
438 - 334 = 104
104 ÷ 334 = 0.31137724550898205
0.31137724550898205 x 100 = 31.14%