-25.5% is the change from 549 to 409
Calculation steps:
[( 409 - 549 ) ÷ 549] x 100 = -25.5%
Formula
Percentage change = [(409 - 549) / 549] x 100
Subtract the new number by the original number
409 - 549 = -140
-140 ÷ 549 = -0.2550091074681239
-0.2550091074681239 x 100 = -25.5%