%%%\u0025 (C99)\U000025 (C99)\x25 (encoding-dependent)\045 (encoding-dependent)\u{25} (C++23)\x{25} (C++23, encoding-dependent)\o{045} (C++23, encoding-dependent)\U00000025\u0025\x25 (encoding-dependent)\045 (encoding-dependent)\u0025\u{25}\u0025\x25\25\000025=25%25