CREATE TABLE table_18958648_1 (overweight__incl_obese__adults VARCHAR2, obese_children_and_adolescents VARCHAR2)

What is every percentage of overweight or obese adults when 12.4% of children and adolescents are obese?
SELECT overweight__incl_obese__adults FROM table_18958648_1 WHERE obese_children_and_adolescents = "12.4%"
SELECT "overweight__incl_obese__adults" FROM "table_18958648_1" WHERE "12.4%" = "obese_children_and_adolescents"