How can I divide B by A and get 10%?

A B

1 0.34 0.03
2 0.34 0.03
3 0.68 0.06
4 0.67 0.06
5 0.67 0.06
6 0.67 0.06
7 0.78 0.07
8 0.89 0.08
9 0.33 0.03
10 0.66 0.06
11 0.66 0.06