-11.48% is the change from 610 to 540
Calculation steps:
[( 540 - 610 ) ÷ 610] x 100 = -11.48%
Formula
Percentage change = [(540 - 610) / 610] x 100
Subtract the new number by the original number
540 - 610 = -70
-70 ÷ 610 = -0.11475409836065574
-0.11475409836065574 x 100 = -11.48%