-17.18% is the change from 966 to 800
Calculation steps:
[( 800 - 966 ) ÷ 966] x 100 = -17.18%
Formula
Percentage change = [(800 - 966) / 966] x 100
Subtract the new number by the original number
800 - 966 = -166
-166 ÷ 966 = -0.17184265010351968
-0.17184265010351968 x 100 = -17.18%