As character names:

U+2296 CIRCLED MINUS 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 138, hex 0x8A, octal \212, binary 10001010
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 150, hex 0x96, octal \226, binary 10010110
This is continuation byte 2, expecting 0 more.

U+2296	CIRCLED MINUS
	= symmetric difference
	x (circle with horizontal bar - 29B5)
	x (alchemical symbol for salt - 1F714)