-67.81% is the change from 966 to 311
Calculation steps:
[( 311 - 966 ) ÷ 966] x 100 = -67.81%
Formula
Percentage change = [(311 - 966) / 966] x 100
Subtract the new number by the original number
311 - 966 = -655
-655 ÷ 966 = -0.6780538302277432
-0.6780538302277432 x 100 = -67.81%