Marnie purchased a dining room table and 6 chairs for $1,860.00 before discount and taxes.  Kristen purchased a queen bed, dresser, 2 night stands, and a chest of drawers for $5,775.00 before discount and taxes.  The tax rate is 8.2%. After taxes,  received the greater percent decrease of % because of the sale.  The difference between the percent decrease that each shopper received after taxes is %.