-91.3% is the change from 989 to 86
Calculation steps:
[( 86 - 989 ) ÷ 989] x 100 = -91.3%
Formula
Percentage change = [(86 - 989) / 989] x 100
Subtract the new number by the original number
86 - 989 = -903
-903 ÷ 989 = -0.9130434782608695
-0.9130434782608695 x 100 = -91.3%