-67.48% is the change from 861 to 280
Calculation steps:
[( 280 - 861 ) ÷ 861] x 100 = -67.48%
Formula
Percentage change = [(280 - 861) / 861] x 100
Subtract the new number by the original number
280 - 861 = -581
-581 ÷ 861 = -0.6747967479674797
-0.6747967479674797 x 100 = -67.48%