The IT department has three teams –Developers team, Testing Team, and Implementation Team. On Jan 1^st, suppose the total approved (budgeted) positions in the IT department is 2600 - allocated as 1450, 700, and 450 to the Developers Team, Testing team, and Implementation team respectively. Currently, there are 1300 Developers, 500 in the Testing team, and 328 in the Implementation team. Two months later, on March 1^st, 10% of the employees currently working in the Testing team were transferred to the Implementation team; 12 of those returned to the Developers team in a week. Calculate the vacancy rate in the Implementation Team at this time.

Please round up your answer to 2 decimal places followed by a percentage sign. Example: 10.55%