Thank you :)
In my university our GPA scale is inverted. The best you can achieve is 0.7 which corresponds to an A+ and the worst is 5.0 which is an F.
You want to make it as clear as possible that you are a strong applicant. Don't make the HR people think too hard about converting your GPA. They'll just get confused.
I automatically associate the term 'GPA' with the American-style 4-point scale. I'm not aware that GPA is often used in other contexts. If this is understood on these terms, it will be an instant rejection.
There's also further confusion with 70% vs 86%.
Perhaps it would help to use the appropriate German term?
https://en.wikipedia.org/wiki/Academic_grading_in_Australia
I actually don't know whether it would be more appropriate when conveying my marks to those in other countries to convert, or to just explain the scale.