I think this animal can calculate the retracement for you:
https://fxdreema.com/shared/p08DyCEKb
0_1563998441855_bc329127-ba1f-4b5f-8277-4f326eab48cf-image.png
0_1563992143104_1ff09afe-9ce7-466e-90ab-beeae86372b3-image.png
0_1563992153340_8a8cb2ec-db9e-4a78-bc62-f0c53ad5750d-image.png
It's just a rough example, sorry I'm in bit of a hurry 😄