-40.58% is the change from 998 to 593
Calculation steps:
[( 593 - 998 ) ÷ 998] x 100 = -40.58%
Formula
Percentage change = [(593 - 998) / 998] x 100
Subtract the new number by the original number
593 - 998 = -405
-405 ÷ 998 = -0.405811623246493
-0.405811623246493 x 100 = -40.58%