54.39% is the change from 342 to 528
Calculation steps:
[( 528 - 342 ) ÷ 342] x 100 = 54.39%
Formula
Percentage change = [(528 - 342) / 342] x 100
Subtract the new number by the original number
528 - 342 = 186
186 ÷ 342 = 0.543859649122807
0.543859649122807 x 100 = 54.39%