What is the percentage of this constellation abbreviated as 'nor'?
CREATE TABLE table_177766_1 (
    per­cent­age VARCHAR,
    abbre­viation VARCHAR
)
SELECT per­cent­age FROM table_177766_1 WHERE abbre­viation = "Nor"
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 is the percentage of this constellation abbreviated as 'nor'? ### Input: CREATE TABLE table_177766_1 (
    per­cent­age VARCHAR,
    abbre­viation VARCHAR
) ### Response: SELECT per­cent­age FROM table_177766_1 WHERE abbre­viation = "Nor"