The PF slip always shows the employee's contribution as 12%, but the employer's contribution will be shown as 3.67%. Please check the calculations based on your salary slip. The reason for doing this is that 8.33% of the employer's contribution goes to the pension fund, which is not shown in the calculations. You can confirm this fact from the covering letter that your company has received along with the PF slips from the PF Department. Don't worry, it is correct and a normal practice of the PF department.
As you have explained that 8.33% goes to the pension fund, but if someone wants to withdraw his/her PF, will they get the whole amount?