-9.95% is the change from 864 to 778
Calculation steps:
[( 778 - 864 ) ÷ 864] x 100 = -9.95%
Formula
Percentage change = [(778 - 864) / 864] x 100
Subtract the new number by the original number
778 - 864 = -86
-86 ÷ 864 = -0.09953703703703703
-0.09953703703703703 x 100 = -9.95%