50.88% is the change from 342 to 516
Calculation steps:
[( 516 - 342 ) ÷ 342] x 100 = 50.88%
Formula
Percentage change = [(516 - 342) / 342] x 100
Subtract the new number by the original number
516 - 342 = 174
174 ÷ 342 = 0.5087719298245614
0.5087719298245614 x 100 = 50.88%