-18.2% is the change from 555 to 454
Calculation steps:
[( 454 - 555 ) ÷ 555] x 100 = -18.2%
Formula
Percentage change = [(454 - 555) / 555] x 100
Subtract the new number by the original number
454 - 555 = -101
-101 ÷ 555 = -0.18198198198198198
-0.18198198198198198 x 100 = -18.2%