-10.66% is the change from 966 to 863
Calculation steps:
[( 863 - 966 ) ÷ 966] x 100 = -10.66%
Formula
Percentage change = [(863 - 966) / 966] x 100
Subtract the new number by the original number
863 - 966 = -103
-103 ÷ 966 = -0.10662525879917184
-0.10662525879917184 x 100 = -10.66%