Answer:
10%
Step-by-step explanation:
The difference between 86 and 77 is 9.
Divide 9 by 86
[tex]\frac{9}{86} = .1046511[/tex]
Multiply by 100
[tex].1046511 * 100 = 10.46511[/tex]
Round to the nearest percent
[tex]10.46511 \rightarrow 10 \textrm{ percent}[/tex]