As character names:

U+F9BA CJK COMPATIBILITY IDEOGRAPH-F9BA character (了)

As raw characters:

了

As a string of HTML entities:

了

Decoder output:

Byte number 1 is decimal 240, hex 0xF0, octal \360, binary 11110000
This is the first byte of a 4 byte sequence.

Byte number 2 is decimal 143, hex 0x8F, octal \217, binary 10001111
This is continuation byte 1, expecting 2 more.

Byte number 3 is decimal 166, hex 0xA6, octal \246, binary 10100110
This is continuation byte 2, expecting 1 more.

Byte number 4 is decimal 186, hex 0xBA, octal \272, binary 10111010
This is continuation byte 3, expecting 0 more.

U+F9BA	CJK COMPATIBILITY IDEOGRAPH-F9BA
	: 4E86