Question: What is the percentage of total area in the ecozone that the percentage of land area is 2.2?
Schema: create table table_15555661_2 (percentage_of_total_area varchar, percentage_of_land_area varchar, PRIMARY KEY (percentage_of_total_area))
SQL: select percentage_of_total_area from table_15555661_2 where percentage_of_land_area = "2.2"