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_2280 ( "Constituency" text, "Electorate" real, "s Spoilt vote" real, "Total poll (%)" text, "For (%)" text, "Against (%)" text, "\u00b1 Yes side 2008 (%)" text )

### Question ###
When +20.3 is the yes side 2008 (%) what is the for percentage?

### Accurate SQL ###

SELECT "For (%)" FROM table_2280 WHERE "\u00b1 Yes side 2008 (%)" = '+20.3'