Excel not updating formula after change
To use formulas efficiently, there are three important considerations that you need to understand: Calculation is the process of computing formulas and then displaying the results as values in the cells that contain the formulas.
To avoid unnecessary calculations that can waste your time and slow down your computer, Microsoft Excel automatically recalculates formulas only when the cells that the formula depends on have changed.
You can control when calculation occurs by changing the calculation process to manual calculation.
If a workbook is set for automatic recalculation, you do not need to press F9 for recalculation.
Note: Solver and Goal Seek are part of a suite of commands sometimes called what-if analysis tools.
Excel temporarily interrupts calculation to carry out the other commands or actions and then resumes calculation.
The calculation process may take more time if the workbook contains a large number of formulas, or if the worksheets contain data tables or functions that automatically recalculate every time the workbook is recalculated.In Excel, it's stored and shown as 1234567.89012345 (this is shown in the formula bar and in the cell).