An online bookstore reported total sales of \(\$768\) million for the first quarter of the current year. If the total sales for the first quarter of the previous year was \(\$640\) million, what is the percent increase in total sales?
A. \(5\%\)
B. \(15\%\)
C. \(17\%\)
D. \(20\%\)
E. \(80\%\)
The OA is D