CREATE TABLE table_2747 ("Season" FLOAT, "Winner" CLOB, "Captain" CLOB, "Coach" CLOB, "League finish" CLOB, "Mat" FLOAT, "W" FLOAT, "L" FLOAT, "Win %" CLOB, "Runner-up" CLOB)

Name the win% for chennai super kings for 2010
SELECT "Win %" FROM table_2747 WHERE "Winner" = 'Chennai Super Kings' AND "Season" = '2010'
SELECT "Win %" FROM "table_2747" WHERE "Season" = '2010' AND "Winner" = 'Chennai Super Kings'