CREATE TABLE table_23239 ("Rank" FLOAT, "Couple" TEXT, "Judges" FLOAT, "Public" FLOAT, "Total" FLOAT, "Vote percentage" TEXT, "Result" TEXT)

What couple had vote percentage of 21.843%?
SELECT "Couple" FROM table_23239 WHERE "Vote percentage" = '21.843%'
SELECT "Couple" FROM "table_23239" WHERE "Vote percentage" = '21.843%'