CREATE TABLE table_204_876 (id NUMBER, "ecclesiastical jurisdictions" CLOB, "latin name" CLOB, "type" CLOB, "rite" CLOB, "ecclesiastical province" CLOB, "established" CLOB, "area  ( km2 ) " NUMBER)

what is the difference area for lubango and luanda
SELECT ABS((SELECT "area (km2)" FROM table_204_876 WHERE "ecclesiastical jurisdictions" = 'lubango') - (SELECT "area (km2)" FROM table_204_876 WHERE "ecclesiastical jurisdictions" = 'luanda'))
SELECT ABS((SELECT "area (km2)" FROM "table_204_876" WHERE "ecclesiastical jurisdictions" = 'lubango') - (SELECT "area (km2)" FROM "table_204_876" WHERE "ecclesiastical jurisdictions" = 'luanda'))