-93.1% is the change from 957 to 66
Calculation steps:
[( 66 - 957 ) ÷ 957] x 100 = -93.1%
Formula
Percentage change = [(66 - 957) / 957] x 100
Subtract the new number by the original number
66 - 957 = -891
-891 ÷ 957 = -0.9310344827586207
-0.9310344827586207 x 100 = -93.1%