Study the table below, which shows the percentage change in mangrove forest cover in seven tropical countries between 2000 and 2020.
Figure 4a - Percentage change in mangrove forest area (2000–2020)
| Country | Percentage change in mangrove forest area (%) |
|---|---|
| Brazil | -15 |
| Indonesia | -22 |
| Malaysia | -10 |
| Nigeria | -6 |
| Australia | 3 |
| Mexico | -4 |
| India | 1 |
Calculate the mean percentage change in mangrove forest area for these seven countries.
You must show all your workings in the space below.
Give your answer to one decimal place.
