-27.75% is the change from 555 to 401
Calculation steps:
[( 401 - 555 ) ÷ 555] x 100 = -27.75%
Formula
Percentage change = [(401 - 555) / 555] x 100
Subtract the new number by the original number
401 - 555 = -154
-154 ÷ 555 = -0.2774774774774775
-0.2774774774774775 x 100 = -27.75%