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_name_74 (_percentage_of_seats VARCHAR, net_gain_loss VARCHAR)

### Question ###
When there was a net gain/loss of +34, what was the percentage of seats that party held?

### Accurate SQL ###

SELECT _percentage_of_seats FROM table_name_74 WHERE net_gain_loss = "+34"