-30.68% is the change from 880 to 610
Calculation steps:
[( 610 - 880 ) ÷ 880] x 100 = -30.68%
Formula
Percentage change = [(610 - 880) / 880] x 100
Subtract the new number by the original number
610 - 880 = -270
-270 ÷ 880 = -0.3068181818181818
-0.3068181818181818 x 100 = -30.68%