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_name_88 (total_passengers INTEGER, capacity_in_use VARCHAR)
### Question:
what is the number of passengers when the capacity is 81.2%?
### Answer:
SELECT SUM(total_passengers) FROM table_name_88 WHERE capacity_in_use = "81.2%"