CREATE TABLE table_204_651 (id NUMBER, "date" CLOB, "championship" CLOB, "location" CLOB, "category" CLOB, "surface" CLOB, "prev. result" CLOB, "prev. points" NUMBER, "new points" NUMBER, "outcome" CLOB)

what is the difference between the new points and previous points in the brisbane international ?
SELECT "new points" - "prev. points" FROM table_204_651 WHERE "championship" = 'brisbane international'
SELECT "new points" - "prev. points" FROM "table_204_651" WHERE "championship" = 'brisbane international'