1. Replace (Ctrl+H) with-(this step is because the decimal point alignment tab used in the next step is unrecognizable), and align both ends of the data.

2. Open the ruler ①, click the tab icon and switch to decimal point alignment tab ②.

3. Select the data ③ to be aligned, click the ruler ④ at the corresponding position of the symbol, and a tab with decimal point alignment will appear. Click the left key and drag the label to the appropriate position ⑤. Repeat ③ ④ ⑤ to align the data of other columns.

4. Replace -(Ctrl+H) with+/-.