Hi there,
Market share loss is calculated by looking at the difference in a company's market share over a specific period. The basic formula is:
Market Share Loss = Previous Market Share - Current Market Share
For example, if a company held a 25% market share last year but now has 20%, the market share loss would be 5 percentage points. This calculation can help identify trends or competitive shifts, especially if you have additional data on the total market or competitor performance.
If you have a specific example or numbers, I’d be happy to help look into it further!