51.75% is the change from 342 to 519
Calculation steps:
[( 519 - 342 ) ÷ 342] x 100 = 51.75%
Formula
Percentage change = [(519 - 342) / 342] x 100
Subtract the new number by the original number
519 - 342 = 177
177 ÷ 342 = 0.5175438596491229
0.5175438596491229 x 100 = 51.75%