-28.29% is the change from 555 to 398
Calculation steps:
[( 398 - 555 ) ÷ 555] x 100 = -28.29%
Formula
Percentage change = [(398 - 555) / 555] x 100
Subtract the new number by the original number
398 - 555 = -157
-157 ÷ 555 = -0.2828828828828829
-0.2828828828828829 x 100 = -28.29%