Recreating charts in Excel or PowerPoint requires patience and data entry, but now this task can be augmented by online tools.
Often charts are presented as screen shots, or scans of old presentations. Some charts have data labels, or no labels and values must be estimated.
I have access to numerous tools to hasten the process of recreating charts in Excel to be used also in PowerPoint and Word Documents.
If you would like to know more, reach out to me.
Note: AI is often used to re-create charts but my personal experience has shown that these programs can complete part of the job, but not everything. Often the present a data set, irrespective of what data is missing.