555����%2527%2522\'\"

It looks like a URL-encoded (percent-encoded) string with two levels:

• %25 is the encoding for the percent sign (%), so %2527 becomes %27, and %2522 becomes %22 when decoded once.
• If you decode twice, %27 becomes ' (apostrophe) and %22 becomes " (double quote).

So decoding twice gives something like 555'"

The "" characters look like a charset/encoding mismatch (likely the original bytes were UTF-8 but rendered as something else). If you know the original text or the correct encoding, I can help reconstruct it.

Quick ways to decode yourself:

• In Python:
  • import urllib.parse
  • s = "555%2527%2522\'\""
  • print(urllib.parse.unquote(urllib.parse.unquote(s)))
• In JavaScript:
  • decodeURIComponent(decodeURIComponent("555%2527%2522\'\""));

If you can share the source or what the final text should be, I’ll fix the exact characters for you.