-67.91% is the change from 966 to 310
Calculation steps:
[( 310 - 966 ) ÷ 966] x 100 = -67.91%
Formula
Percentage change = [(310 - 966) / 966] x 100
Subtract the new number by the original number
310 - 966 = -656
-656 ÷ 966 = -0.6790890269151139
-0.6790890269151139 x 100 = -67.91%