-0.55% is the change from 548 to 545
Calculation steps:
[( 545 - 548 ) ÷ 548] x 100 = -0.55%
Formula
Percentage change = [(545 - 548) / 548] x 100
Subtract the new number by the original number
545 - 548 = -3
-3 ÷ 548 = -0.005474452554744526
-0.005474452554744526 x 100 = -0.55%