-3.45% is the change from 609 to 588
Calculation steps:
[( 588 - 609 ) ÷ 609] x 100 = -3.45%
Formula
Percentage change = [(588 - 609) / 609] x 100
Subtract the new number by the original number
588 - 609 = -21
-21 ÷ 609 = -0.034482758620689655
-0.034482758620689655 x 100 = -3.45%