-27.98% is the change from 554 to 399
Calculation steps:
[( 399 - 554 ) ÷ 554] x 100 = -27.98%
Formula
Percentage change = [(399 - 554) / 554] x 100
Subtract the new number by the original number
399 - 554 = -155
-155 ÷ 554 = -0.27978339350180503
-0.27978339350180503 x 100 = -27.98%