-72.07% is the change from 555 to 155
Calculation steps:
[( 155 - 555 ) ÷ 555] x 100 = -72.07%
Formula
Percentage change = [(155 - 555) / 555] x 100
Subtract the new number by the original number
155 - 555 = -400
-400 ÷ 555 = -0.7207207207207207
-0.7207207207207207 x 100 = -72.07%