Although the numbers are eye-wateringly huge to most 'ordinary' people, it is important to appreciate that profits/losses do not necessarily correlate to cashflow - a company can be very profitable but fail because of a tight cashflow. Conversely, a company recording losses can survive provided its cashflow is sufficient to meet its needs. Profits and losses can be affected by bookkeeping adjustments that to not involve movement in cash. For instance, a large loss might be charged against a company's accumulated reserves, but that doesn't mean that cash has flowed out of the business. Similarly, a company may have made a handsome profit when the value of its property rose, but that profit is not matched by an increase in cash (unless the property were to be sold).
The share price reflects both the underlying net asset value of the company and a premium or discount based on the market's sentiments for the company's forecasts and general market forecasts. Often, the market has already factored in expected profits/losses to the company's share price, so the announcement of a huge loss will not necessarily adversely impact the share price. Indeed, recording the loss (as opposed to just forecasting it) provides the market with certainty, and markets like certainty, which can sometimes lead to an increase in share price when these sorts of announcements are made.
There are so many factors that go into the determination of a share price and of course, predicting these is what analysts and fund managers do for a living.