-30.95% is the change from 966 to 667
Calculation steps:
[( 667 - 966 ) ÷ 966] x 100 = -30.95%
Formula
Percentage change = [(667 - 966) / 966] x 100
Subtract the new number by the original number
667 - 966 = -299
-299 ÷ 966 = -0.30952380952380953
-0.30952380952380953 x 100 = -30.95%