-84.88% is the change from 939 to 142
Calculation steps:
[( 142 - 939 ) ÷ 939] x 100 = -84.88%
Formula
Percentage change = [(142 - 939) / 939] x 100
Subtract the new number by the original number
142 - 939 = -797
-797 ÷ 939 = -0.8487752928647497
-0.8487752928647497 x 100 = -84.88%