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_20609 ( "Year" text, "Stamp duty reserve tax" text, "Standard Stamp Duty" text, "Standard Duties Total Revenue (in \u20acmillion)" real, "over Total Tax Revenue (in %)" text, "over GDP (in %)" text )

### Question ###
What is the stamp duty reserve tax when the percentage over total tax revenue is 0.79?

### Accurate SQL ###

SELECT "Stamp duty reserve tax" FROM table_20609 WHERE "over Total Tax Revenue (in %)" = '0.79'