-31.99% is the change from 597 to 406
Calculation steps:
[( 406 - 597 ) ÷ 597] x 100 = -31.99%
Formula
Percentage change = [(406 - 597) / 597] x 100
Subtract the new number by the original number
406 - 597 = -191
-191 ÷ 597 = -0.31993299832495814
-0.31993299832495814 x 100 = -31.99%