CREATE TABLE table_20609 ("Year" TEXT, "Stamp duty reserve tax" TEXT, "Standard Stamp Duty" TEXT, "Standard Duties Total Revenue  ( in \\u20acmillion ) " FLOAT, "over Total Tax Revenue  ( in % ) " TEXT, "over GDP  ( in % ) " TEXT)

What is the stamp duty reserve tax when the percentage over total tax revenue is 0.79?
SELECT "Stamp duty reserve tax" FROM table_20609 WHERE "over Total Tax Revenue (in %)" = '0.79'
SELECT "Stamp duty reserve tax" FROM "table_20609" WHERE "over Total Tax Revenue (in %)" = '0.79'