As character names:

U+00C4 LATIN CAPITAL LETTER A WITH DIAERESIS character (Ä)

As raw characters:

Ä

As a string of HTML entities:

Ä

Decoder output:

Byte number 1 is decimal 195, hex 0xC3, octal \303, binary 11000011
This is the first byte of a 2 byte sequence.

Byte number 2 is decimal 132, hex 0x84, octal \204, binary 10000100
This is continuation byte 1, expecting 0 more.

U+00C4	LATIN CAPITAL LETTER A WITH DIAERESIS
	: 0041 0308