Let's start by looking at the long-term chart for POWRBTC (Power Ledger), while we keep it simple... Look at the green arrow:
The high volume and growth after closing above EMA10 is the main signal here, POWRBTC is ready to change trend.
Now, looking at the main chart above, the daily timeframe, we can see that POWRBTC conquered all EMAs until it hit EMA300 (grey line), here prices stopped and started to retrace.
This is simple. If prices move and close above EMA300, we can see POWRBTC go straight up like many altcoins are doing.
But if instead this level can't be broken, prices will move lower just to move back up with more strength.