-97.2% is the change from 966 to 27
Calculation steps:
[( 27 - 966 ) ÷ 966] x 100 = -97.2%
Formula
Percentage change = [(27 - 966) / 966] x 100
Subtract the new number by the original number
27 - 966 = -939
-939 ÷ 966 = -0.9720496894409938
-0.9720496894409938 x 100 = -97.2%