-21.8% is the change from 867 to 678
Calculation steps:
[( 678 - 867 ) ÷ 867] x 100 = -21.8%
Formula
Percentage change = [(678 - 867) / 867] x 100
Subtract the new number by the original number
678 - 867 = -189
-189 ÷ 867 = -0.2179930795847751
-0.2179930795847751 x 100 = -21.8%