In $1992$, average salary of Finance students = $Rs.5,450/month$
In $1996$, average salary of Finance students = $Rs.9,810/month$
∴ Percentage increase in the average salary of finance from $1992$ to $1996$ will be = $\dfrac{(9,810 - 5,450)}{5,450} \times 100$
$ \qquad = \dfrac{4,360}{5,450} \times 100$
$ \qquad = 0.8 \times 100$
$ \qquad = 80\%$