A car dealership pays a wholesale price of $12,000 to purchase a vehicle. The retail price of the vehicle is $15,840. During a special sales event, the dealership offers a 10% discount and sell the vehicle for $14,256. The car dealership pays the salesperson a bonus for selling the car equal to 6.5% of the sale price. How much commission did the salesperson lose when they decided to offer a 10% discount on the price of the car?