If RAR files are allocated 5% for recovery, the probability of recovery is equal to 5%?

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If not, what is the meaning of these percentages?
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5% to restore the idea means 100% recovery if damaged not more than 5% of the transmitted information net. Ie if you need to transfer a megabyte file, 5% recovery will provide an opportunity to correct not more than 50 kilobytes of garbage out without retransmission, paying the extra 50 kilobytes of data transmitted.
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The RAR format can contain specific data in which the recorded information to restore the file.

\r
Info for recovery files can contain up to 524,288 sectors. In case of damage of the file WinRAR is able to repair with each sector 512 bytes of data. This figure may change in the smaller side, if there were multiple file damage.

\r©
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no, it means that you can throw any 5% of this file and all will be restored. Read more error-correction coding on the wiki.
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there is described a quantitative ratio
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No, excuse me, but I even in my childhood understand such things.
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Rather 5%*degree of compression, although not interested in
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IMHO: with extremely low probability of receiving corrupted by 5% of the file while in transit over the Internet or on modern hard drives, allocation of 5% under traffic information for vosstanovlenija irrational, because the probability of case where its use is required and will help, as far as I understand, negligible. Recovery record was important during the development of the RAR algorithm (although probably in the latest version, it already another) — in the days of floppy disks and BBS.
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