What was the reason for change in staff in formal installations on March 15, 1865?
CREATE TABLE table_2147588_3 (
    reason_for_change VARCHAR,
    date_of_successors_formal_installation VARCHAR
)
SELECT reason_for_change FROM table_2147588_3 WHERE date_of_successors_formal_installation = "March 15, 1865"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: What was the reason for change in staff in formal installations on March 15, 1865? ### Input: CREATE TABLE table_2147588_3 (
    reason_for_change VARCHAR,
    date_of_successors_formal_installation VARCHAR
) ### Response: SELECT reason_for_change FROM table_2147588_3 WHERE date_of_successors_formal_installation = "March 15, 1865"