14% is the change from 300 to 342
Calculation steps:
[( 342 - 300 ) ÷ 300] x 100 = 14%
Formula
Percentage change = [(342 - 300) / 300] x 100
Subtract the new number by the original number
342 - 300 = 42
42 ÷ 300 = 0.14
0.14 x 100 = 14%
Example