CREATE TABLE table_203_212 (id NUMBER, "#" NUMBER, "district" CLOB, "land area  ( km2 ) " NUMBER, "population\ ( 2010 census ) " NUMBER, "density  ( persons/km2 ) " NUMBER)

how many more people live in dennery than the forest reserve ?
SELECT (SELECT "population\n(2010 census)" FROM table_203_212 WHERE "district" = 'dennery') - (SELECT "population\n(2010 census)" FROM table_203_212 WHERE "district" = 'forest reserve')
SELECT (SELECT "population\n(2010 census)" FROM "table_203_212" WHERE "district" = 'dennery') - (SELECT "population\n(2010 census)" FROM "table_203_212" WHERE "district" = 'forest reserve')