Understand gain calculation

Hello,
I can’t understand the gain calculation.
Can someone explain this to me or is there a mistake?
Thanks

How did you import data into this wallet?
Revolut API

What have you tried to fix this so far?

Hi @Alain_Antoine

You can see how the gains are calculated by opening the transaction and checking the Cost Analysis tab—this shows the acquisition details, cost basis, and gain or loss for that specific transaction: