CREATE TABLE table_203_152 (id DECIMAL, "province" TEXT, "capital" TEXT, "area  ( km2 ) " DECIMAL, "population" DECIMAL, "density" DECIMAL)

what is the difference between the population of san juan and sanchez ramirez ?
SELECT (SELECT "population" FROM table_203_152 WHERE "province" = 'san juan') - (SELECT "population" FROM table_203_152 WHERE "province" = 'sanchez ramirez')
SELECT (SELECT "population" FROM "table_203_152" WHERE "province" = 'san juan') - (SELECT "population" FROM "table_203_152" WHERE "province" = 'sanchez ramirez')