-25.15% is the change from 664 to 497
Calculation steps:
[( 497 - 664 ) ÷ 664] x 100 = -25.15%
Formula
Percentage change = [(497 - 664) / 664] x 100
Subtract the new number by the original number
497 - 664 = -167
-167 ÷ 664 = -0.25150602409638556
-0.25150602409638556 x 100 = -25.15%