-65.73% is the change from 966 to 331
Calculation steps:
[( 331 - 966 ) ÷ 966] x 100 = -65.73%
Formula
Percentage change = [(331 - 966) / 966] x 100
Subtract the new number by the original number
331 - 966 = -635
-635 ÷ 966 = -0.6573498964803313
-0.6573498964803313 x 100 = -65.73%