user
Instruction
Answer the question based on the provided table.


Table
Table Title: 'Business figures' regarding 'Global Fashion Group'
Table Content:
| Year | Net Revenue (EURm) | Revenue growth (%, FX neutral basis) | Adjusted EBITDA margin | Cash position (EURm) |
| --- | --- | --- | --- | --- |
| 2014 | 627.5 | Undisclosed | (38.0)% | 223.8 |
| 2015 | 808.0 | 48.2% | (26.9)% | 76.7 |
| 2016 | 1023.1 (excl. Jabong) | 26.4% | (12.5)% | 255.0 |
| 2017 | 1095.0 (excl. Jabong & Namshi) | 19.9% | (8.9%) | 257.3 |


Question
What was the percentage of decrease of GFG's adjusted EBITDA margin from 2016 to 2017?


Answer Format
The final answer should be a sentence and use the following format:
```json
{
    "answer": "your_generated_sentence_here"
}
```
rule
["GFG's adjusted EBITDA margin decreased from 12.5% in 2016 to 8.9% in 2017."]