-6.8% is the change from 647 to 603
Calculation steps:
[( 603 - 647 ) ÷ 647] x 100 = -6.8%
Formula
Percentage change = [(603 - 647) / 647] x 100
Subtract the new number by the original number
603 - 647 = -44
-44 ÷ 647 = -0.06800618238021638
-0.06800618238021638 x 100 = -6.8%