What is the Interpretation of Log Likelihood in Molecular Data Analysis?

Phaso
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Hello,

I am a Bio informatician and encountered Likelihood while executing the Molecular data. I have used one software that is using the Hidden Markov Model in addition to the EM Algorithm and Viterbi algorithm. After calculations are done already, in addition to the output, it is giving me some logL values.

The logL values are like below:

logL = -484.1534290649416

I just want to know how it is inferred? If it is very low in negative then the executed output is better or not? I have read some articles about log likelihood but they only explained about the whole likelihood process.

Note: There is no graph. It is only showing the logL values.

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