56.14% is the change from 342 to 534
Calculation steps:
[( 534 - 342 ) ÷ 342] x 100 = 56.14%
Formula
Percentage change = [(534 - 342) / 342] x 100
Subtract the new number by the original number
534 - 342 = 192
192 ÷ 342 = 0.5614035087719298
0.5614035087719298 x 100 = 56.14%