-9.79% is the change from 960 to 866
Calculation steps:
[( 866 - 960 ) ÷ 960] x 100 = -9.79%
Formula
Percentage change = [(866 - 960) / 960] x 100
Subtract the new number by the original number
866 - 960 = -94
-94 ÷ 960 = -0.09791666666666667
-0.09791666666666667 x 100 = -9.79%