title: How to change a formula according to cell value in excel?
body: <p>I have a list of all my expenditures in Excel. Each day takes a line.</p>
  
  <p>What do I want is to compare the difference between 2 days according to values on another cell. Example of formula. = A250 - A191 . I want to change this 250 and 191 just writing 321 and 192 in any anothe cell, automatically changing the formula to: = A321-A192.</p>
  
  <p>Is it possible to do?</p>