28.07% is the change from 342 to 438
Calculation steps:
[( 438 - 342 ) ÷ 342] x 100 = 28.07%
Formula
Percentage change = [(438 - 342) / 342] x 100
Subtract the new number by the original number
438 - 342 = 96
96 ÷ 342 = 0.2807017543859649
0.2807017543859649 x 100 = 28.07%