If you want to measure your download speed or upload speed in Kilobytes per second, go to http://speedtest.net/user-settings.php. Under "Speed Measurement," use the drop-down box and select kilobytes then hit save.
I see no issue. Speedtest is is showing Mb/s and download is in KB/s. Seems about right, 1.7Mb/s would be around 212KB/s, so 192KB/s is not far off it.
There are two reasons, your download speed the browser is reporting is in bytes as Armadillo suggested and speedtest is in bits (divide bits by 8 to get bytes).
The other reason if you are getting a slower download speed is that the server cannot manage the bandwidth at the moment.