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_77 (_percentage_wt_2nd VARCHAR, bp_3rd_comp__˚c_ VARCHAR)

### Question ###
Tell me the % of wt 2nd for bp 3rd comp of 98.4

### Accurate SQL ###

SELECT _percentage_wt_2nd FROM table_name_77 WHERE bp_3rd_comp__˚c_ = "98.4"