-10.09% is the change from 664 to 597
Calculation steps:
[( 597 - 664 ) ÷ 664] x 100 = -10.09%
Formula
Percentage change = [(597 - 664) / 664] x 100
Subtract the new number by the original number
597 - 664 = -67
-67 ÷ 664 = -0.10090361445783133
-0.10090361445783133 x 100 = -10.09%