18.57% is the change from 350 to 415
Calculation steps:
[( 415 - 350 ) ÷ 350] x 100 = 18.57%
Formula
Percentage change = [(415 - 350) / 350] x 100
Subtract the new number by the original number
415 - 350 = 65
65 ÷ 350 = 0.18571428571428572
0.18571428571428572 x 100 = 18.57%