-5.63% is the change from 639 to 603
Calculation steps:
[( 603 - 639 ) ÷ 639] x 100 = -5.63%
Formula
Percentage change = [(603 - 639) / 639] x 100
Subtract the new number by the original number
603 - 639 = -36
-36 ÷ 639 = -0.056338028169014086
-0.056338028169014086 x 100 = -5.63%