All the cells of negative numbers will become red, while the positive numbers will remain the same. Click Conditional Formatting button in the Styles group. Click New Rule in the menu. Select a style, ...
Learn how to use either of these methods in Microsoft Excel to display negative values in red. To enter a negative value into a Microsoft Excel sheet, precede the value with a hyphen character, (-), ...
To add and subtract numbers always begin counting from zero. When adding positive numbers, count to the right. When subtracting positive numbers, count to the left.