What is the vote percentage for the couple gary and maria?
CREATE TABLE "table1_26375386_20" (
  "rank" real,
  "couple" text,
  "judges" real,
  "public" real,
  "total" real,
  "vote_percentage" text,
  "result" text
);
SELECT "vote_percentage" FROM "table1_26375386_20" WHERE "couple"='Gary and Maria';