-0.33% is the change from 606 to 604
Calculation steps:
[( 604 - 606 ) ÷ 606] x 100 = -0.33%
Formula
Percentage change = [(604 - 606) / 606] x 100
Subtract the new number by the original number
604 - 606 = -2
-2 ÷ 606 = -0.0033003300330033004
-0.0033003300330033004 x 100 = -0.33%