-59.52% is the change from 966 to 391
Calculation steps:
[( 391 - 966 ) ÷ 966] x 100 = -59.52%
Formula
Percentage change = [(391 - 966) / 966] x 100
Subtract the new number by the original number
391 - 966 = -575
-575 ÷ 966 = -0.5952380952380952
-0.5952380952380952 x 100 = -59.52%