-9.85% is the change from 609 to 549
Calculation steps:
[( 549 - 609 ) ÷ 609] x 100 = -9.85%
Formula
Percentage change = [(549 - 609) / 609] x 100
Subtract the new number by the original number
549 - 609 = -60
-60 ÷ 609 = -0.09852216748768473
-0.09852216748768473 x 100 = -9.85%