23.68% is the change from 342 to 423
Calculation steps:
[( 423 - 342 ) ÷ 342] x 100 = 23.68%
Formula
Percentage change = [(423 - 342) / 342] x 100
Subtract the new number by the original number
423 - 342 = 81
81 ÷ 342 = 0.23684210526315788
0.23684210526315788 x 100 = 23.68%