-83.09% is the change from 940 to 159
Calculation steps:
[( 159 - 940 ) ÷ 940] x 100 = -83.09%
Formula
Percentage change = [(159 - 940) / 940] x 100
Subtract the new number by the original number
159 - 940 = -781
-781 ÷ 940 = -0.8308510638297872
-0.8308510638297872 x 100 = -83.09%