-30.75% is the change from 966 to 669
Calculation steps:
[( 669 - 966 ) ÷ 966] x 100 = -30.75%
Formula
Percentage change = [(669 - 966) / 966] x 100
Subtract the new number by the original number
669 - 966 = -297
-297 ÷ 966 = -0.30745341614906835
-0.30745341614906835 x 100 = -30.75%