As character names:

U+0091 <control> character (&#x0091;)

As raw characters:

‘

As a string of HTML entities:

&#x0091;

Decoder output:

Byte number 1 is decimal 194, hex 0xC2, octal \302, binary 11000010
This is the first byte of a 2 byte sequence.

Byte number 2 is decimal 145, hex 0x91, octal \221, binary 10010001
This is continuation byte 1, expecting 0 more.

U+0091	<control>
	= PRIVATE USE ONE