-83.39% is the change from 957 to 159
Calculation steps:
[( 159 - 957 ) ÷ 957] x 100 = -83.39%
Formula
Percentage change = [(159 - 957) / 957] x 100
Subtract the new number by the original number
159 - 957 = -798
-798 ÷ 957 = -0.8338557993730408
-0.8338557993730408 x 100 = -83.39%