-21.89% is the change from 868 to 678
Calculation steps:
[( 678 - 868 ) ÷ 868] x 100 = -21.89%
Formula
Percentage change = [(678 - 868) / 868] x 100
Subtract the new number by the original number
678 - 868 = -190
-190 ÷ 868 = -0.21889400921658986
-0.21889400921658986 x 100 = -21.89%