-6.37% is the change from 644 to 603
Calculation steps:
[( 603 - 644 ) ÷ 644] x 100 = -6.37%
Formula
Percentage change = [(603 - 644) / 644] x 100
Subtract the new number by the original number
603 - 644 = -41
-41 ÷ 644 = -0.06366459627329192
-0.06366459627329192 x 100 = -6.37%