CREATE TABLE table_20143 ("Ecozone" CLOB, "Area  ( km\\u00b2 ) " FLOAT, "Percentage of total area" CLOB, "Percentage of land area" CLOB, "Percentage protected" CLOB)

What is the percentage of total area in the ecozone that the area is 1782252 km2?
SELECT "Percentage of total area" FROM table_20143 WHERE "Area (km\u00b2)" = '1782252'
SELECT "Percentage of total area" FROM "table_20143" WHERE "Area (km\u00b2)" = '1782252'