As mentioned by you, you were not in Service Tax during the period 2013-14 & 14-15 and it appears that you have not collected Service Tax from your service receiver. You are also entitled to threshold exemption limit of Rs.ten lakhs for the year 2013-14. In case you have not recovered Service Tax from the service receiver, you are also entitled to cum-tax benefit under Section 67 (2) of the Finance Act. After the benefit of threshold exemption limit of ₹ 10 lakhs, taxable value works out to ₹ 12,85,625/- (without cum-tax benefit) for 2013-14 for which Service Tax works out to ₹ 1,54,275/- whereas you have deposited ST of ₹ 1,40,907/-. For the year 2014-15 you are not entitled to the benefit of ₹ 10 lakhs again, so payable Service Tax works out to ₹ 2,68,861/- on taxable value of ₹ 22,38,425/-(without cum-tax benefit). Since Service Tax paid by you is incorrect, so Education Cesses paid by you are also incorrect. Education cesses have to be calculated on the correct amount of Service Tax to be paid.
During 2013-14 percentage of Service Tax paid works out to 10.96% calculated after allowing threshold exemption limit and during 2014-15 it works out to 3.93%.