Sports club has a membership of 800 and operates 26 baseball fields and 24 soccer fields. Before deciding whether to accept new members, the club council would like to know how many members regularly use each field. A survey of the membership indicates that 62% use the baseball field regularly and 64% regularly use the soccer field, and 3% do not regularly use either of these fields. What percentage of the 800 use both the soccer and baseball fields?