Character: about the conversion to UFT8 from a "simplified Chinese" file that has a "confusing" file name

I use Mac with the MacOS interface in English. Download a file from the Chinese website (Simplified Chinese). It is a confusing file name.

The confusing file name:

% E6% B9% 96% E5% 8D% 97IPTV.apk

The real name of the file:

TV IPTV.apk

I know what's really new because I know the file where I download.
I know there is an "iconv" command in MacOS. But, I do not know the right kind of coding.

The "iconv -l" command shows many types. List all of them

For example, I run "iconv -f GB_2312-80 -t UTF-8 orig.txt> new.txt"

This means that I convert a file in the format GB_2312-80 to UTF-8.

However, I do not know why the file downloaded from the site has a "confusing" file name on my system.

I want to know the actual character format of this confusing file. This is my question.

Furmore, according to the following list "iconv -l"This command, what are those possible" type of simplified Chinese file name format "as shown below? If you know.

Should I try all the formats that are possibly related to the response format? It seems a slow and tedious way of doing it.

Also, do you have a problem with the character format of my MacOS? If you know.

> ANSI_X3.4-1968 ANSI_X3.4-1986 ASCII CP367 IBM367 ISO-IR-6 ISO646-US
> ISO_646.IRV: 1991 US-ASCII CSASCII UTF-8 US-10646-UCS-2 UCS-2
> CSUNICODE UCS-2BE UNICODE-1-1 UNICODEBIG CSUNICODE11 UCS-2LE
> UNICODELITTLE ISO-10646-UCS-4 UCS-4 CSUCS4 UCS-4BE UCS-4LE UTF-16
> UTF-16BE UTF-16LE UTF-32 UTF-32BE UTF-32LE UNICODE-1-1-UTF-7 UTF-7
> CSUNICODE11UTF7 UCS-2-INTERNAL UCS-2-SWAPPED UCS-4-INTERNAL
> UCS-4-SWAPPED C99 JAVA CP819 IBM819 ISO-8859-1 ISO-IR-100 ISO8859-1
> ISO_8859-1 ISO_8859-1: 1987 L1 LATIN1 CSISOLATIN1 ISO-8859-2
> ISO-IR-101 ISO8859-2 ISO_8859-2 ISO_8859-2: 1987 L2 LATIN2 CSISOLATIN2
> ISO-8859-3 ISO-IR-109 ISO8859-3 ISO_8859-3 ISO_8859-3: 1988 L3 LATIN3
> CSISOLATIN3 ISO-8859-4 ISO-IR-110 ISO8859-4 ISO_8859-4
> ISO_8859-4: 1988 L4 LATIN4 CSISOLATIN4 CYRILLIC ISO-8859-5 ISO-IR-144
> ISO8859-5 ISO_8859-5 ISO_8859-5: 1988 CSISOLATINCYRILLIC ARABIC
> ASMO-708 ECMA-114 ISO-8859-6 ISO-IR-127 ISO8859-6 ISO_8859-6
> ISO_8859-6: 1987 CSISOLATINARABIC ECMA-118 ELOT_928 GREEK GREEK8
> ISO-8859-7 ISO-IR-126 ISO8859-7 ISO_8859-7 ISO_8859-7: 1987
> ISO_8859-7: 2003 CSISOLATINGREEK HEBREW ISO-8859-8 ISO-IR-138
> ISO8859-8 ISO_8859-8 ISO_8859-8: 1988 CSISOLATINHEBREW ISO-8859-9
> ISO-IR-148 ISO8859-9 ISO_8859-9 ISO_8859-9: 1989 L5 LATIN5 CSISOLATIN5
> ISO-8859-10 ISO-IR-157 ISO8859-10 ISO_8859-10 ISO_8859-10: 1992 L6
> LATIN6 CSISOLATIN6 ISO-8859-11 ISO8859-11 ISO_8859-11 ISO-8859-13
> ISO-IR-179 ISO8859-13 ISO_8859-13 L7 LATIN7 ISO-8859-14 ISO-CELTIC
> ISO-IR-199 ISO8859-14 ISO_8859-14 ISO_8859-14: 1998 L8 LATIN8
> ISO-8859-15 ISO-IR-203 ISO8859-15 ISO_8859-15 ISO_8859-15: 1998
> LATIN-9 ISO-8859-16 ISO-IR-226 ISO8859-16 ISO_8859-16
> ISO_8859-16: 2001 L10 LATIN10 KOI8-R CSKOI8R KOI8-U KOI8-RU CP1250
> MS-EE WINDOWS-1250 CP1251 MS-CYRL WINDOWS-1251 CP1252 MS-ANSI
> WINDOWS-1252 CP1253 MS-GRIEGO WINDOWS-1253 CP1254 MS-TURK WINDOWS-1254
> CP1255 MS-HEBR WINDOWS-1255 CP1256 MS-ARAB WINDOWS-1256 CP1257
> WINBALTRIM WINDOWS-1257 CP1258 WINDOWS-1258 850 CP850 IBM850
> CSPC850MULTILINGUAL 862 CP862 IBM862 CSPC862LATINHEBREW 866 CP866
> IBM866 CSIBM866 CP1131 MAC MACINTOSH MACROMAN CSMACINTOSH
> MACCENTRALEUROPE MACICELAND MACCROATIAN MACROMANIA MACCYRILLIC
> MACUKRAINE MACGREEK MACTURKISH MACHEBREW MACARABIC MACTHAI HP-ROMAN8
> R8 ROMAN8 CSHPROMAN8 NEXTSTEP ARMSCII-8 GEORGIAN-ACADEMY GEORGIAN-PS
> KOI8-T CP154 PTIL4-ASIATIC PT154 PTCP154 CSPTCP154 KZ-1048 RK1048
> STRK1048-2002 CSKZ1048 MULELAO-1 CP1133 IBM-CP1133 ISO-IR-166 TIS-620
> TIS620 TIS620-0 TIS620.2529-1 TIS620.2533-0 TIS620.2533-1 CP874
> WINDOWS-874 VISCII VISCII1.1-1 CSVISCII TCVN TCVN-5712 TCVN5712-1
> TCVN5712-1: 1993 ISO-IR-14 ISO646-JP JIS_C6220-1969-RO JP
> CSISO14JISC6220RO JISX0201-1976 JIS_X0201 X0201 CSHALFWIDTHKATAKANA
> ISO-IR-87 JIS0208 JIS_C6226-1983 JIS_X0208 JIS_X0208-1983
> JIS_X0208-1990 X0208 CSISO87JISX0208 ISO-IR-159 JIS_X0212
> JIS_X0212-1990 JIS_X0212.1990-0 X0212 CSISO159JISX02121990 CN
> GB_1988-80 ISO-IR-57 ISO646-CN CSISO57GB1988 CHINESE GB_2312-80
> ISO-IR-58 CSISO58GB231280 CN-GB-ISOIR165 ISO-IR-165 ISO-IR-149 KOREAN
> KSC_5601 KS_C_5601-1987 KS_C_5601-1989 CSKSC56011987 EUC-JP EUCJP
> EXTENDED_UNIX_CODE_PACKED_FORMAT_FOR_JAPANESE CSEUCPKDFMTJAPANESE
> MS_KANJI SHIFT-JIS SHIFT_JIS SJIS CSSHIFTJIS CP932 ISO-2022-JP
> CSISO2022JP ISO-2022-JP-1 ISO-2022-JP-2 CSISO2022JP2 CP50221
> ISO-2022-JP-MS CN-GB EUC-CN EUCCN GB2312 CSGB2312 GBK CP936 MS936
> WINDOWS-936 GB18030 ISO-2022-CN CSISO2022CN ISO-2022-CN-EXT HZ
> HZ-GB-2312 EUC-TW EUCTW CSEUCTW BIG-5 BIG-FIVE BIG5 BIGFIVE CN-BIG5
> CSBIG5 CP950 BIG5-HKSCS: 1999 BIG5-HKSCS: 2001 BIG5-HKSCS: 2004
> BIG5-HKSCS BIG5-HKSCS: 2008 BIG5HKSCS EUC-KR EUCKR CSEUCKR CP949 UHC
> CP1361 JOHAB ISO-2022-KR CSISO2022KR