-93.2% is the change from 971 to 66
Calculation steps:
[( 66 - 971 ) ÷ 971] x 100 = -93.2%
Formula
Percentage change = [(66 - 971) / 971] x 100
Subtract the new number by the original number
66 - 971 = -905
-905 ÷ 971 = -0.9320288362512873
-0.9320288362512873 x 100 = -93.2%