Calculating percentages

 X% of Y is the same as Y% of X.  For example, calculating 32% of 50 is the same as 50% of 32, which is 16.

Fixing default zoom in LibreOffice Calc

  1. Close all LibreOffice documents
  2. Open a new document
  3. Adjust the slider on the bottom right to your desired zoom level
  4. Close the document (no need to save it first)
  5. Open a new document - it should be at your desires zoom level

NOTE! This does not work if you use the mouse scroll wheel!