why is yield down when the stock price is up?

Happend for me with Norwegian air Shuttle (NAS)
I bought it @ $1.02 usd 20 shares.
Then my yield went down close to $3-4. The price rn is 1.05.
Is this because of the cost of buying the shares without the actual price of the stock?

Im really confused here, whould appreciate some clarificating.

Thanks!