I'm translating as best as I can. My German is a bit rusty having lived in the US for 28 years already.
Hello, I use the calculator from NiCandles (a chandler based in Ireland) This calculator is a blessing for all chandlers and so easy to use. Here's the link.
https://www.nicandlesupplies.co.uk/blogs/how-to-guides/how-to-calculate-fragrance-scent-load
You just have to add how much wax you want to use and what fragrance load % you want...the calculator does everything else.
I hope this helps you and everyone who's been trying to figure this out.