Does anyone know what the figure returned by the Linear Regression Slope function means?

It should mean rate of change of Y divided by rate of change of X. For the 6 candle range on stock I am using it on this would mean  about 20 price points over 6 candles, resulting in -3.33.

However the figure it is giving me is  -0.058. I cant correlate that to the visible slope (white unbroken line going through the candles)