Database: retails
Question: How much higher in percentage is the highest supply cost of the part "hot spring dodger dim light" than the lowest supply cost?
SQL: SELECT CAST((MAX(T1.ps_supplycost) - MIN(T1.ps_supplycost)) AS REAL) * 100 / MIN(T1.ps_supplycost) FROM partsupp AS T1 INNER JOIN supplier AS T2 ON T1.ps_suppkey = T2.s_suppkey INNER JOIN part AS T3 ON T1.ps_partkey = T3.p_partkey WHERE T3.p_name = 'hot spring dodger dim light'