128% is the change from 150 to 342
Calculation steps:
[( 342 - 150 ) ÷ 150] x 100 = 128%
Formula
Percentage change = [(342 - 150) / 150] x 100
Subtract the new number by the original number
342 - 150 = 192
192 ÷ 150 = 1.28
1.28 x 100 = 128%
Example