Table:
2019	2018

$ million	$ million

At 1 January	2.3	2.6

Received during the year	0.3	0.1

Released to the income statement	(0.6)	(0.4)

At 31 December	2.0	2.3

Answer the following question leveraging the table plus the background text, feel free to explain how you reached the answer, then present the result in JSON format {"answer": ["ANSWER"], "scale": "SCALE"} (leave scale empty if none).

Text:
24. Government grants
The following government grants are included within trade and other payables:
Government grants have been received to accelerate and support research and development in the vulnerability of global navigation satellite systems and other high technology projects.

Question: What was the percentage change in the amount at 31 December?

((2.0-2.3)/2.3) * 100, therefore {"answer": "-13.04", "scale": "percent"}