-6.33% is the change from 679 to 636
Calculation steps:
[( 636 - 679 ) ÷ 679] x 100 = -6.33%
Formula
Percentage change = [(636 - 679) / 679] x 100
Subtract the new number by the original number
636 - 679 = -43
-43 ÷ 679 = -0.06332842415316642
-0.06332842415316642 x 100 = -6.33%