-21.25% is the change from 861 to 678
Calculation steps:
[( 678 - 861 ) ÷ 861] x 100 = -21.25%
Formula
Percentage change = [(678 - 861) / 861] x 100
Subtract the new number by the original number
678 - 861 = -183
-183 ÷ 861 = -0.21254355400696864
-0.21254355400696864 x 100 = -21.25%