-19.15% is the change from 543 to 439
Calculation steps:
[( 439 - 543 ) ÷ 543] x 100 = -19.15%
Formula
Percentage change = [(439 - 543) / 543] x 100
Subtract the new number by the original number
439 - 543 = -104
-104 ÷ 543 = -0.19152854511970535
-0.19152854511970535 x 100 = -19.15%