-18.07% is the change from 664 to 544
Calculation steps:
[( 544 - 664 ) ÷ 664] x 100 = -18.07%
Formula
Percentage change = [(544 - 664) / 664] x 100
Subtract the new number by the original number
544 - 664 = -120
-120 ÷ 664 = -0.18072289156626506
-0.18072289156626506 x 100 = -18.07%