-97.1% is the change from 861 to 25
Calculation steps:
[( 25 - 861 ) ÷ 861] x 100 = -97.1%
Formula
Percentage change = [(25 - 861) / 861] x 100
Subtract the new number by the original number
25 - 861 = -836
-836 ÷ 861 = -0.9709639953542393
-0.9709639953542393 x 100 = -97.1%