Are my pension calculations correct?

Hi all,

I'm a little confused about my pension calculations. I earn a salary of £22,000 and have chosen to pay 9% into my pension. The following is what my pension provider's website says:

Monthly contribution*
9.00%
Monthly contribution (£)
£94.56

The above is reflected on my payslip. It is the £94.56 figure that confused me. Should this not be £118.20: 9%((22,000 - 6,240)/12)?

If it is wrong, is there any guidance on if I need to be provided with the right figures retrospectively?

Is the 9% being taken before or after tax?

My take home salary is £ 18,922.40 (I have a Postgrad loan). Plugging that into the figure gives a calculation of £95.12 - a much closer figure to what's going on.

That said, is pension not meant to be taken prior to any deductions? That's the whole point, no?