Consider the above reaction where \( 6.1 \, \text{g} \) of Benzoic acid is used to get \( 7.8 \, \text{g} \) of m-bromo benzoic acid. The percentage yield of the product is____
[Given: Atomic masses: \( \mathrm{C:12.0\,u, \ H:1.0\,u, \ O:16.0\,u, \ Br:80.0\,u} \)].
