-40.06% is the change from 966 to 579
Calculation steps:
[( 579 - 966 ) ÷ 966] x 100 = -40.06%
Formula
Percentage change = [(579 - 966) / 966] x 100
Subtract the new number by the original number
579 - 966 = -387
-387 ÷ 966 = -0.40062111801242234
-0.40062111801242234 x 100 = -40.06%