-58.59% is the change from 966 to 400
Calculation steps:
[( 400 - 966 ) ÷ 966] x 100 = -58.59%
Formula
Percentage change = [(400 - 966) / 966] x 100
Subtract the new number by the original number
400 - 966 = -566
-566 ÷ 966 = -0.5859213250517599
-0.5859213250517599 x 100 = -58.59%