33.99% is the change from 409 to 548
Calculation steps:
[( 548 - 409 ) ÷ 409] x 100 = 33.99%
Formula
Percentage change = [(548 - 409) / 409] x 100
Subtract the new number by the original number
548 - 409 = 139
139 ÷ 409 = 0.33985330073349634
0.33985330073349634 x 100 = 33.99%