-96.89% is the change from 966 to 30
Calculation steps:
[( 30 - 966 ) ÷ 966] x 100 = -96.89%
Formula
Percentage change = [(30 - 966) / 966] x 100
Subtract the new number by the original number
30 - 966 = -936
-936 ÷ 966 = -0.968944099378882
-0.968944099378882 x 100 = -96.89%