To find the sales tax rate for this purchase, we can divide the sales tax amount by the original cost of the car:
sales tax rate = sales tax amount / original cost of car
In this case, the sales tax amount is $2,458.22 and the original cost of the car is $32,345. Therefore, we can calculate the sales tax rate as:
sales tax rate = $2,458.22 / $32,345 ≈ 0.076 or 7.6%
Therefore, the sales tax rate for this purchase was approximately 7.6%.