-9.17% is the change from 731 to 664
Calculation steps:
[( 664 - 731 ) ÷ 731] x 100 = -9.17%
Formula
Percentage change = [(664 - 731) / 731] x 100
Subtract the new number by the original number
664 - 731 = -67
-67 ÷ 731 = -0.09165526675786594
-0.09165526675786594 x 100 = -9.17%