47.4% is the change from 346 to 510
Calculation steps:
[( 510 - 346 ) ÷ 346] x 100 = 47.4%
Formula
Percentage change = [(510 - 346) / 346] x 100
Subtract the new number by the original number
510 - 346 = 164
164 ÷ 346 = 0.47398843930635837
0.47398843930635837 x 100 = 47.4%