-0.54% is the change from 558 to 555
Calculation steps:
[( 555 - 558 ) ÷ 558] x 100 = -0.54%
Formula
Percentage change = [(555 - 558) / 558] x 100
Subtract the new number by the original number
555 - 558 = -3
-3 ÷ 558 = -0.005376344086021506
-0.005376344086021506 x 100 = -0.54%