What is the withdrawal rate for the school district with a graduation rate of 89.3%?
create table table_21514460_1 (withdrawal_rate__2010_11_ varchar, graduation_rate__2011_12_ varchar, PRIMARY KEY (withdrawal_rate__2010_11_))
select withdrawal_rate__2010_11_ from table_21514460_1 where graduation_rate__2011_12_ = "89.3%"