-85.62% is the change from 939 to 135
Calculation steps:
[( 135 - 939 ) ÷ 939] x 100 = -85.62%
Formula
Percentage change = [(135 - 939) / 939] x 100
Subtract the new number by the original number
135 - 939 = -804
-804 ÷ 939 = -0.8562300319488818
-0.8562300319488818 x 100 = -85.62%