-13.04% is the change from 667 to 580
Calculation steps:
[( 580 - 667 ) ÷ 667] x 100 = -13.04%
Formula
Percentage change = [(580 - 667) / 667] x 100
Subtract the new number by the original number
580 - 667 = -87
-87 ÷ 667 = -0.13043478260869565
-0.13043478260869565 x 100 = -13.04%