As character names:

U+035F COMBINING DOUBLE MACRON BELOW character (͟)

As raw characters:

͟

As a string of HTML entities:

͟

Decoder output:

Byte number 1 is decimal 205, hex 0xCD, octal \315, binary 11001101
This is the first byte of a 2 byte sequence.

Byte number 2 is decimal 159, hex 0x9F, octal \237, binary 10011111
This is continuation byte 1, expecting 0 more.

U+035F	COMBINING DOUBLE MACRON BELOW