Who had a perfection percentage of 77.96%?
CREATE TABLE "final_results_2007_fai_world_grand_prix" (
  "rank" real,
  "name" text,
  "nationality" text,
  "score" text,
  "perfection" text
);
SELECT "name" FROM "final_results_2007_fai_world_grand_prix" WHERE "perfection"='77.96%';