-93.2% is the change from 970 to 66
Calculation steps:
[( 66 - 970 ) ÷ 970] x 100 = -93.2%
Formula
Percentage change = [(66 - 970) / 970] x 100
Subtract the new number by the original number
66 - 970 = -904
-904 ÷ 970 = -0.931958762886598
-0.931958762886598 x 100 = -93.2%