-0.33% is the change from 603 to 601
Calculation steps:
[( 601 - 603 ) ÷ 603] x 100 = -0.33%
Formula
Percentage change = [(601 - 603) / 603] x 100
Subtract the new number by the original number
601 - 603 = -2
-2 ÷ 603 = -0.003316749585406302
-0.003316749585406302 x 100 = -0.33%