As character names:

U+03D4 GREEK UPSILON WITH DIAERESIS AND HOOK SYMBOL character (ϔ)

As raw characters:

ϔ

As a string of HTML entities:

ϔ

Decoder output:

Byte number 1 is decimal 207, hex 0xCF, octal \317, binary 11001111
This is the first byte of a 2 byte sequence.

Byte number 2 is decimal 148, hex 0x94, octal \224, binary 10010100
This is continuation byte 1, expecting 0 more.

U+03D4	GREEK UPSILON WITH DIAERESIS AND HOOK SYMBOL
	: 03D2 0308