-6.66% is the change from 646 to 603
Calculation steps:
[( 603 - 646 ) ÷ 646] x 100 = -6.66%
Formula
Percentage change = [(603 - 646) / 646] x 100
Subtract the new number by the original number
603 - 646 = -43
-43 ÷ 646 = -0.06656346749226007
-0.06656346749226007 x 100 = -6.66%