Loss is represented on a break-even graph as anything below the break-even point. Loss is displayed as the shaded area between the revenue and total cost lines, below the BEP. On the below example ...

The graph above demonstrates a break-even ... Sales below this point represent a loss, and everything above it is profit.

Assessing The Net Percentage Of BTC Supply In Profit/Loss From time to time ... Profitable supply above 80% to 90% on average The chart below shows a couple of such examples (white rectangles areas), ...