-6.56% is the change from 610 to 570
Calculation steps:
[( 570 - 610 ) ÷ 610] x 100 = -6.56%
Formula
Percentage change = [(570 - 610) / 610] x 100
Subtract the new number by the original number
570 - 610 = -40
-40 ÷ 610 = -0.06557377049180328
-0.06557377049180328 x 100 = -6.56%