-86.05% is the change from 989 to 138
Calculation steps:
[( 138 - 989 ) ÷ 989] x 100 = -86.05%
Formula
Percentage change = [(138 - 989) / 989] x 100
Subtract the new number by the original number
138 - 989 = -851
-851 ÷ 989 = -0.8604651162790697
-0.8604651162790697 x 100 = -86.05%