Percentage exported CSV file

In that same CSV, percentage values appear with different numbers. I imagine they have some very small scale that I cannot decipher like this: 10029121651553000.
Which corresponds to a value very close to 1% according to my measurements, what is the parameterization for this case?

En ese mismo CSV me aparecen valores de porcentaje con números diferentes, imagino que tienen alguna escala muy pequeña que no logro descifrar así: 10029121651553000.
Que corresponde a un valor muy cercano al 1% según mis mediciones, cual es la parametrización para este caso?

Can you provide more information about where this CSV is coming from, where you're using it, and possibly upload a sample file so we can see exactly what you're talking about?

chart_export (1).csv (28.3 KB)
este es mi documento

Those look like millisecond timestamps. It's the number of ms since 1970-01-01 00:00:00.

For Excel try
=(A1/86400/1000)+25569

Unix time uses 1970-01-01 as t0.
Excel uses 1900-01-01 as t0.
1970-01-01 - 1900-01-01 = 25569 days. (Double check.)