21.7% is the change from 341 to 415
Calculation steps:
[( 415 - 341 ) ÷ 341] x 100 = 21.7%
Formula
Percentage change = [(415 - 341) / 341] x 100
Subtract the new number by the original number
415 - 341 = 74
74 ÷ 341 = 0.21700879765395895
0.21700879765395895 x 100 = 21.7%