-9.19% is the change from 664 to 603
Calculation steps:
[( 603 - 664 ) ÷ 664] x 100 = -9.19%
Formula
Percentage change = [(603 - 664) / 664] x 100
Subtract the new number by the original number
603 - 664 = -61
-61 ÷ 664 = -0.09186746987951808
-0.09186746987951808 x 100 = -9.19%