-85.92% is the change from 980 to 138
Calculation steps:
[( 138 - 980 ) ÷ 980] x 100 = -85.92%
Formula
Percentage change = [(138 - 980) / 980] x 100
Subtract the new number by the original number
138 - 980 = -842
-842 ÷ 980 = -0.8591836734693877
-0.8591836734693877 x 100 = -85.92%