Table schema:
CREATE TABLE table_name_90 (_number_of_phones_as__percentage_of_population INTEGER, last_updated_date VARCHAR, number_of_mobile_phones VARCHAR)

Question: What percent is 327,577,529 people with phones in June 2013?
SQL: SELECT MAX(_number_of_phones_as__percentage_of_population) FROM table_name_90 WHERE last_updated_date = "june 2013" AND number_of_mobile_phones = "327,577,529"