different unit in column values and line values

Dear all,

I want to show sales total and hit rate values in the line and column chart.

I want to lock the unit of sales total in "million" and keep the unit of hit rate in "%", so I set it on the data labels but it contral the unit in both. the hit rate % change to 0.00%M

how can I lock the unit in sales total with no change in hit rate?

Thanks