How to calculate the payment index in 2005 for social security personal account to pay 11% and after that to pay 8%

Personal account to pay 11%, personal account to pay 8%.

1, personal account to pay 11%: personal contribution ratio divided by the total contribution ratio to get. A region of the total contribution rate of 12%, the individual contribution rate of 1.1%, then the region in 2005, the individual account to pay 11% of the payment index is: 1.1%/12% = 0.092.

2, the individual account to pay 8%: the individual contribution rate divided by the total contribution rate. A region of the total contribution rate of 12%, the individual contribution rate of 0.8%, then the region in 2005, the individual account to pay 8% of the payment index is: 0.8%/12% = 0.067.