-66.56% is the change from 966 to 323
Calculation steps:
[( 323 - 966 ) ÷ 966] x 100 = -66.56%
Formula
Percentage change = [(323 - 966) / 966] x 100
Subtract the new number by the original number
323 - 966 = -643
-643 ÷ 966 = -0.6656314699792961
-0.6656314699792961 x 100 = -66.56%