47.14% is the change from 350 to 515
Calculation steps:
[( 515 - 350 ) ÷ 350] x 100 = 47.14%
Formula
Percentage change = [(515 - 350) / 350] x 100
Subtract the new number by the original number
515 - 350 = 165
165 ÷ 350 = 0.4714285714285714
0.4714285714285714 x 100 = 47.14%