-3.02% is the change from 597 to 579
Calculation steps:
[( 579 - 597 ) ÷ 597] x 100 = -3.02%
Formula
Percentage change = [(579 - 597) / 597] x 100
Subtract the new number by the original number
579 - 597 = -18
-18 ÷ 597 = -0.03015075376884422
-0.03015075376884422 x 100 = -3.02%