"\x{80}\x{92}" etc just indicate characters by hexadecimal number. Which characters are referenced by those numbers is depended on the encoding that you're using, and you usually can't tell just from the char number. The only thing we can say is that it's not a 7-bit encoding, since \x80 takes up 8 bits.

See Encode, ord, chr, perldata, perlio, binmode, utf8 etc.