How To Increase a Number By a Percentage. If want to calculate a percentage increase in Excel (i.e. increase a number by a specified percentage), this can be done by simply multiply the number by 1 + the percentage increase. - which gives the result 60.
you don't know how to enter a formula into an Excel cell ? or you don't know how to combine the content of cells into one result in another cell ? or ... ?
but just answering literally this one-line-problem-definition