Shamin Jewelers sells diamond necklaces for $402.00 less 6%. Magnifico Jewelers offers the same necklace for $517.00 less 27%, 9%. What additional rate of discount must Shamin offer to meet the competitor's price? The additional rate of discount that Shamin Jewelers must offer to meet the competitor's price is 1%. (Round to two decimal places as needed. Round all intermediate values to six decimal places as needed.)