-81.15% is the change from 610 to 115
Calculation steps:
[( 115 - 610 ) ÷ 610] x 100 = -81.15%
Formula
Percentage change = [(115 - 610) / 610] x 100
Subtract the new number by the original number
115 - 610 = -495
-495 ÷ 610 = -0.8114754098360656
-0.8114754098360656 x 100 = -81.15%