-3.3% is the change from 606 to 586
Calculation steps:
[( 586 - 606 ) ÷ 606] x 100 = -3.3%
Formula
Percentage change = [(586 - 606) / 606] x 100
Subtract the new number by the original number
586 - 606 = -20
-20 ÷ 606 = -0.033003300330033
-0.033003300330033 x 100 = -3.3%