News trading discussion - continuation

For tomorrow the European news is expected. Most of all there will be the growth of the euro. But not a huge one.

14/02
13:30 USD CPI MoM

15/02
13:30 USD Retail Sales MoM

16/02
00:30 AUD Employment Change

I'd say that tomorrow's news may not affected on the market movement. The only exception is the dollar. There may be slight changes in movement.

Is there any need of previous data because it didn’t worked for me example> if previous data is -10 and actual data is -5 so should we call it positive impact because even the data is in minus value but it’s better than previous data, so it should be positive impact and bullish price action should happen? If am wrong please tell me right thing, i lost my money by using like this.

Or no previous data is used to predict impacts.
For example if value is in minus (eg> -3) so simply is it a bearish impact?
and if value is in plus (eg> 5) so is it a bullish impact?
please tell me

21/02
13:30 CAD CPI MoM

22/02
01:00 NZD Official Cash Rate
19:00 USD Foms

23/02
13:30 USD GDP QoQ

For now I only a few important news. These is NZD and EUR news. I prefer it may have a little affect on the market.

01/03
00:30 AUD GDP QoQ

I expect the great news by an hour on US dollar. IT may affected on the general market movement for today.

News trading is favored by traders just because it gives traders quick return. But proper market analysis is needed before trading a news because a news can crash your capital either.