-67.7% is the change from 867 to 280
Calculation steps:
[( 280 - 867 ) ÷ 867] x 100 = -67.7%
Formula
Percentage change = [(280 - 867) / 867] x 100
Subtract the new number by the original number
280 - 867 = -587
-587 ÷ 867 = -0.6770472895040369
-0.6770472895040369 x 100 = -67.7%