-82.13% is the change from 610 to 109
Calculation steps:
[( 109 - 610 ) ÷ 610] x 100 = -82.13%
Formula
Percentage change = [(109 - 610) / 610] x 100
Subtract the new number by the original number
109 - 610 = -501
-501 ÷ 610 = -0.8213114754098361
-0.8213114754098361 x 100 = -82.13%