As character names:

U+2BF9 EQUALS SIGN WITH INFINITY BELOW 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 175, hex 0xAF, octal \257, binary 10101111
This is continuation byte 1, expecting 1 more.

Byte number 3 is decimal 185, hex 0xB9, octal \271, binary 10111001
This is continuation byte 2, expecting 0 more.

U+2BF9	EQUALS SIGN WITH INFINITY BELOW
	= with compensation for the material