-76.09% is the change from 966 to 231
Calculation steps:
[( 231 - 966 ) ÷ 966] x 100 = -76.09%
Formula
Percentage change = [(231 - 966) / 966] x 100
Subtract the new number by the original number
231 - 966 = -735
-735 ÷ 966 = -0.7608695652173914
-0.7608695652173914 x 100 = -76.09%