-82.78% is the change from 964 to 166
Calculation steps:
[( 166 - 964 ) ÷ 964] x 100 = -82.78%
Formula
Percentage change = [(166 - 964) / 964] x 100
Subtract the new number by the original number
166 - 964 = -798
-798 ÷ 964 = -0.8278008298755186
-0.8278008298755186 x 100 = -82.78%