-11.28% is the change from 966 to 857
Calculation steps:
[( 857 - 966 ) ÷ 966] x 100 = -11.28%
Formula
Percentage change = [(857 - 966) / 966] x 100
Subtract the new number by the original number
857 - 966 = -109
-109 ÷ 966 = -0.11283643892339544
-0.11283643892339544 x 100 = -11.28%