既にデコード表示してね？

Shift_JIS
http://example.com/%8E%84%82%CC%96%BC%91O%82%CD%92%86%96%EC%82%C5%82%B7

EUC-JP
http://example.com/%BB%E4%A4%CE%CC%BE%C1%B0%A4%CF%C3%E6%CC%EE%A4%C7%A4%B9

UTF-8
http://example.com/%E7%A7%81%E3%81%AE%E5%90%8D%E5%89%8D%E3%81%AF%E4%B8%AD%E9%87%8E%E3%81%A7%E3%81%99