-10.84% is the change from 609 to 543
Calculation steps:
[( 543 - 609 ) ÷ 609] x 100 = -10.84%
Formula
Percentage change = [(543 - 609) / 609] x 100
Subtract the new number by the original number
543 - 609 = -66
-66 ÷ 609 = -0.10837438423645321
-0.10837438423645321 x 100 = -10.84%