34.23% is the change from 409 to 549
Calculation steps:
[( 549 - 409 ) ÷ 409] x 100 = 34.23%
Formula
Percentage change = [(549 - 409) / 409] x 100
Subtract the new number by the original number
549 - 409 = 140
140 ÷ 409 = 0.3422982885085575
0.3422982885085575 x 100 = 34.23%