27.14% is the change from 409 to 520
Calculation steps:
[( 520 - 409 ) ÷ 409] x 100 = 27.14%
Formula
Percentage change = [(520 - 409) / 409] x 100
Subtract the new number by the original number
520 - 409 = 111
111 ÷ 409 = 0.2713936430317848
0.2713936430317848 x 100 = 27.14%