-0.55% is the change from 543 to 540
Calculation steps:
[( 540 - 543 ) ÷ 543] x 100 = -0.55%
Formula
Percentage change = [(540 - 543) / 543] x 100
Subtract the new number by the original number
540 - 543 = -3
-3 ÷ 543 = -0.0055248618784530384
-0.0055248618784530384 x 100 = -0.55%