-10.36% is the change from 647 to 580
Calculation steps:
[( 580 - 647 ) ÷ 647] x 100 = -10.36%
Formula
Percentage change = [(580 - 647) / 647] x 100
Subtract the new number by the original number
580 - 647 = -67
-67 ÷ 647 = -0.1035548686244204
-0.1035548686244204 x 100 = -10.36%