FX impact of dollar vs gbp on purchases

So, I’ve held a position in Tesla for quite some time and currently I have a almost -13% FX IMPACT for the past seven months since purchase. Does any one know why the impact is so high seen as the dollar is down less than 6% against the pound over the same period? I don’t see where the 13% is on the chart either, it’s never been down that low.
Any help appreciated :pray:

That movement seems fairly dramatic.

I can’t seem to fathom why it is so high a loss? It has moved 3% in the past week!

Just checked and it seems I might have timed the bottom of that dip to near perfection! Guess that’s the puzzle solved.