Go to Format Number Percent in Google Sheets menu to apply the percentage view. To start open your Google Sheets spreadsheet and then type IF test value_if_true value_if_false into a cell. Click or tap the cell where you want to place the formula.
The tutorial shows how to use the SUMIF function in Google spreadsheets to conditionally sum cells.
Click on the drop-down menus and select one of the symbols to create an equation. Spreadsheets can have multiple sheets with each sheet having any number of rows or columns. Type the equals sign. Go to Format Number Percent in Google Sheets menu to apply the percentage view.