As character names:

U+25D0 CIRCLE WITH LEFT HALF BLACK character (◐)

As raw characters:

◐

As a string of HTML entities:

◐

Decoder output:

Byte number 1 is decimal 226, hex 0xE2, octal \342, binary 11100010
This is the first byte of a 3 byte sequence.

Byte number 2 is decimal 151, hex 0x97, octal \227, binary 10010111
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 144, hex 0x90, octal \220, binary 10010000
This is continuation byte 2, expecting 0 more.

U+25D0	CIRCLE WITH LEFT HALF BLACK
	x (first quarter moon symbol - 1F313)