-23.23% is the change from 861 to 661
Calculation steps:
[( 661 - 861 ) ÷ 861] x 100 = -23.23%
Formula
Percentage change = [(661 - 861) / 861] x 100
Subtract the new number by the original number
661 - 861 = -200
-200 ÷ 861 = -0.23228803716608595
-0.23228803716608595 x 100 = -23.23%