-25.9% is the change from 664 to 492
Calculation steps:
[( 492 - 664 ) ÷ 664] x 100 = -25.9%
Formula
Percentage change = [(492 - 664) / 664] x 100
Subtract the new number by the original number
492 - 664 = -172
-172 ÷ 664 = -0.25903614457831325
-0.25903614457831325 x 100 = -25.9%