5 Vera is a shop manager. She has this information about the income in her shop for eight weeks this year.
8
4
42.5
6
7
5
Week
1
3
2
Income
52.4 19.4 47.9
45.1
53.5
39.8
42.3
(thousands of £)
The median income for the same eight weeks last year was £49 300
Vera knows that the median income for these eight weeks has decreased this year
compared to last year.
DO NOT WRITE IN THIS ARON
(a) Work out the percentage decrease of the median income.
Give your answer to 2 decimal places.