-9.86% is the change from 649 to 585
Calculation steps:
[( 585 - 649 ) ÷ 649] x 100 = -9.86%
Formula
Percentage change = [(585 - 649) / 649] x 100
Subtract the new number by the original number
585 - 649 = -64
-64 ÷ 649 = -0.09861325115562404
-0.09861325115562404 x 100 = -9.86%