-10.56% is the change from 966 to 864
Calculation steps:
[( 864 - 966 ) ÷ 966] x 100 = -10.56%
Formula
Percentage change = [(864 - 966) / 966] x 100
Subtract the new number by the original number
864 - 966 = -102
-102 ÷ 966 = -0.10559006211180125
-0.10559006211180125 x 100 = -10.56%