As character names:

U+022C LATIN CAPITAL LETTER O WITH TILDE AND MACRON character (Ȭ)

As raw characters:

Ȭ

As a string of HTML entities:

Ȭ

Decoder output:

Byte number 1 is decimal 200, hex 0xC8, octal \310, binary 11001000
This is the first byte of a 2 byte sequence.

Byte number 2 is decimal 172, hex 0xAC, octal \254, binary 10101100
This is continuation byte 1, expecting 0 more.

U+022C	LATIN CAPITAL LETTER O WITH TILDE AND MACRON
	: 00D5 0304