Task: Table-QA (source dataset: TableBench)

Task: 
You are given a table containing structured data and a natural language question referring to the table. Your goal is to analyze the table and provide an accurate and concise answer based on the given data.

Instructions:
1. Understand the Table: Examine the structure, headers, and data in the table. Identify relevant columns and rows related to the question.
2. Interpret the Question: Determine whether the question requires direct retrieval, aggregation, comparison, sorting, filtering, or inference.
3. Extract the Answer: Use logical reasoning and numerical operations (if necessary) to derive the correct response from the table.
4. Format the Answer: No explanation, return the answer in a structured JSON format: {"answer": <answer>}. If the question cannot be answered due to missing or ambiguous data, return a JSON response with {"answer": null}.

Table:
|   year |   political rights |   civil liberties | status      | president       |
|-------:|-------------------:|------------------:|:------------|:----------------|
|   1972 |                  7 |                 7 | not free    | idi amin        |
|   1973 |                  7 |                 7 | not free    | idi amin        |
|   1974 |                  7 |                 7 | not free    | idi amin        |
|   1975 |                  7 |                 7 | not free    | idi amin        |
|   1976 |                  7 |                 7 | not free    | idi amin        |
|   1977 |                  7 |                 7 | not free    | idi amin        |
|   1978 |                  7 |                 7 | not free    | idi amin        |
|   1979 |                  6 |                 6 | not free    | idi amin        |
|   1980 |                  4 |                 4 | not free    | godfrey binaisa |
|   1981 |                  5 |                 5 | partly free | milton obote    |
|   1982 |                  5 |                 5 | partly free | milton obote    |
|   1983 |                  4 |                 5 | partly free | milton obote    |
|   1984 |                  4 |                 5 | partly free | milton obote    |
|   1985 |                  5 |                 4 | partly free | milton obote    |
|   1986 |                  5 |                 4 | partly free | tito okello     |
|   1987 |                  5 |                 4 | partly free | yoweri museveni |
|   1988 |                  5 |                 5 | partly free | yoweri museveni |
|   1989 |                  6 |                 4 | partly free | yoweri museveni |
|   1990 |                  6 |                 5 | partly free | yoweri museveni |
|   1991 |                  6 |                 6 | not free    | yoweri museveni |
|   1992 |                  6 |                 5 | not free    | yoweri museveni |
|   1993 |                  6 |                 5 | not free    | yoweri museveni |
|   1994 |                  5 |                 5 | partly free | yoweri museveni |
|   1995 |                  5 |                 4 | partly free | yoweri museveni |
|   1996 |                  4 |                 4 | partly free | yoweri museveni |
|   1997 |                  4 |                 4 | partly free | yoweri museveni |
|   1998 |                  4 |                 4 | partly free | yoweri museveni |
|   1999 |                  5 |                 5 | partly free | yoweri museveni |
|   2000 |                  6 |                 5 | partly free | yoweri museveni |
|   2001 |                  6 |                 5 | partly free | yoweri museveni |
|   2002 |                  6 |                 4 | partly free | yoweri museveni |
|   2003 |                  5 |                 4 | partly free | yoweri museveni |
|   2004 |                  5 |                 4 | partly free | yoweri museveni |
|   2005 |                  5 |                 4 | partly free | yoweri museveni |
|   2006 |                  5 |                 4 | partly free | yoweri museveni |
|   2007 |                  5 |                 4 | partly free | yoweri museveni |
|   2008 |                  5 |                 4 | partly free | yoweri museveni |
|   2009 |                  5 |                 4 | partly free | yoweri museveni |
|   2010 |                  5 |                 4 | partly free | yoweri museveni |
|   2011 |                  5 |                 4 | free        | yoweri museveni |

Question:
What is the percentage change in the 'civil liberties' score from 1972 to 1980?


id: 912908fb008a8e1d4fd9e79bfc7abd07
qtype: NumericalReasoning
label: -42.86%.