-15.57% is the change from 687 to 580
Calculation steps:
[( 580 - 687 ) ÷ 687] x 100 = -15.57%
Formula
Percentage change = [(580 - 687) / 687] x 100
Subtract the new number by the original number
580 - 687 = -107
-107 ÷ 687 = -0.15574963609898107
-0.15574963609898107 x 100 = -15.57%