-27.03% is the change from 555 to 405
Calculation steps:
[( 405 - 555 ) ÷ 555] x 100 = -27.03%
Formula
Percentage change = [(405 - 555) / 555] x 100
Subtract the new number by the original number
405 - 555 = -150
-150 ÷ 555 = -0.2702702702702703
-0.2702702702702703 x 100 = -27.03%