text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_21481509_4 (r1b1c__r_v88_ VARCHAR, total_percentage VARCHAR)
  ### Question:
  What percentage is listed in column r1b1c (r-v88) for the 4.5% total percentage?
  ### Answer:
  SELECT r1b1c__r_v88_ FROM table_21481509_4 WHERE total_percentage = "4.5%"