-82.77% is the change from 923 to 159
Calculation steps:
[( 159 - 923 ) ÷ 923] x 100 = -82.77%
Formula
Percentage change = [(159 - 923) / 923] x 100
Subtract the new number by the original number
159 - 923 = -764
-764 ÷ 923 = -0.8277356446370531
-0.8277356446370531 x 100 = -82.77%