Hello all, I arrived to this question because a customer of mine was experiencing the same Issue.
In my case a few columns that were calculations, had been formatted, when reviewing the result, the columns were returning a percentage but the wrong format in the columns was making the Excel to crash on the cell value because of an incorrect formatting.
The short version is: go to the column layout specifically on the columns where the values are being converted to 0.00000000000000000000000% and click on the column format window cell, choose the correct format and apply to the column, for me I changed it from ###0.00;(###0.00) to ###0.00%;(###0.00%) on all the affected columns and problem disappeared.