Maximum Daily Loss: 5% of the account balance. 

Neither the Evaluation Trader's account balance nor account equity may decrease by more than 5% of the Closing Balance of the preceding Trading Day during any Trading Day in the Reference Period (23:00:00 CET to 22:59:59 CET the following day). The Daily Drawdown Rule refers to this.  
For instance, in the event that a trader's closing balance on the previous Trading Day was $10,000, neither their equity nor balance can fall to or below $9,500 in the next Trading Day, as this would result in a $500 loss (5% of $10,000).