-3.01% is the change from 598 to 580
Calculation steps:
[( 580 - 598 ) ÷ 598] x 100 = -3.01%
Formula
Percentage change = [(580 - 598) / 598] x 100
Subtract the new number by the original number
580 - 598 = -18
-18 ÷ 598 = -0.030100334448160536
-0.030100334448160536 x 100 = -3.01%