Mavity furniture is having a sale this weekend.

before taxes, spend receive
$500.00 - $999.99 $100.00 off
$1,000.00 - $1,999.99 $250.00 off
$2,000.00 or more $750.00 off

ms. marner purchased a conference table and chairs for $1,860.00 before discount and taxes. ms. kim purchased cubicles for $5,775.00 before discount and taxes. the tax rate is 8.2%.
after taxes, ms. received the greater percent decrease of % because of the sale. the difference between the percent decrease that each shopper received after taxes is %.