Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_203_387 ( id number, "parish est" number, "church" text, "city" text, "current bldg begun" number, "weekly collections" text, "notes" number )

### Question ###
how much more are the weekly collections from cathedral of christ the king than most blessed sacrament catholic church ?

### Accurate SQL ###

SELECT (SELECT "weekly collections" FROM table_203_387 WHERE "church" = 'cathedral of christ the king') - (SELECT "weekly collections" FROM table_203_387 WHERE "church" = 'most blessed sacrament catholic church')