-6.9% is the change from 623 to 580
Calculation steps:
[( 580 - 623 ) ÷ 623] x 100 = -6.9%
Formula
Percentage change = [(580 - 623) / 623] x 100
Subtract the new number by the original number
580 - 623 = -43
-43 ÷ 623 = -0.06902086677367576
-0.06902086677367576 x 100 = -6.9%