50% is the change from 346 to 519
Calculation steps:
[( 519 - 346 ) ÷ 346] x 100 = 50%
Formula
Percentage change = [(519 - 346) / 346] x 100
Subtract the new number by the original number
519 - 346 = 173
173 ÷ 346 = 0.5
0.5 x 100 = 50%
Example