-16.57% is the change from 664 to 554
Calculation steps:
[( 554 - 664 ) ÷ 664] x 100 = -16.57%
Formula
Percentage change = [(554 - 664) / 664] x 100
Subtract the new number by the original number
554 - 664 = -110
-110 ÷ 664 = -0.16566265060240964
-0.16566265060240964 x 100 = -16.57%