-10.37% is the change from 646 to 579
Calculation steps:
[( 579 - 646 ) ÷ 646] x 100 = -10.37%
Formula
Percentage change = [(579 - 646) / 646] x 100
Subtract the new number by the original number
579 - 646 = -67
-67 ÷ 646 = -0.10371517027863777
-0.10371517027863777 x 100 = -10.37%