-17.87% is the change from 610 to 501
Calculation steps:
[( 501 - 610 ) ÷ 610] x 100 = -17.87%
Formula
Percentage change = [(501 - 610) / 610] x 100
Subtract the new number by the original number
501 - 610 = -109
-109 ÷ 610 = -0.17868852459016393
-0.17868852459016393 x 100 = -17.87%