Question: How many countries had a total freshwater withdrawal (km 3 /yr) where the agricultural use (m 3 /p/yr)(in %) was 428(62%)?
Schema: create table table_15909409_2 (total_freshwater_withdrawal__km_3__yr_ varchar, agricultural_use__m_3__p_yr__in__percentage_ varchar, PRIMARY KEY (total_freshwater_withdrawal__km_3__yr_))
SQL: select count(total_freshwater_withdrawal__km_3__yr_) from table_15909409_2 where agricultural_use__m_3__p_yr__in__percentage_ = "428(62%)"