21.24% is the change from 339 to 411
Calculation steps:
[( 411 - 339 ) ÷ 339] x 100 = 21.24%
Formula
Percentage change = [(411 - 339) / 339] x 100
Subtract the new number by the original number
411 - 339 = 72
72 ÷ 339 = 0.21238938053097345
0.21238938053097345 x 100 = 21.24%