-3.28% is the change from 610 to 590
Calculation steps:
[( 590 - 610 ) ÷ 610] x 100 = -3.28%
Formula
Percentage change = [(590 - 610) / 610] x 100
Subtract the new number by the original number
590 - 610 = -20
-20 ÷ 610 = -0.03278688524590164
-0.03278688524590164 x 100 = -3.28%