Comparison of compression ratio of various compressors

Filename

Type

Size
[KB]

AMK fast
[%]

AMK best
[%]

AMK II
[%]

ARJ -jm (best)
[%]

GZIP -9 (best)
[%]

RAS.DBF Database 1638 20.4 19.6 18.1 19.9 20.1
LICORI.IND Database's index 439 45.0 33.8 27.5 27.6 26.7
COMMAND.COM DOS program 54 73.6 72.9 67.3 60.2 60.3
CORELPNT.EXE Win16 program 1137 58.4 54.4 48.2 42.2 41.9
BC4000 DOS Program 253 62.3 59.2 54.8 45.9 45.2
ENGLISH.TXT Help text 113 49.0 32.7 32.7 24.2 23.5
POLISH.TXT Text 64 68.1 50.0 50.0 39.2 38.7

'AMK II' method is the 'AMK best' stream compressed with static Huffman method.
ARJ is a popular DOS compressor.
The ratios include headers preceding compressed data streams.