For invoices issued by Google India Pvt Ltd on or after 1 June 2016, service tax rate of 15% (including Swachh Bharat Cess and Krishi Kalyan Cess) on value of taxable services is applicable. The service tax rate has undergone changes due to change in the applicable legislation. For invoices issued between November 15, 2015 and May 31, 2016 applicable service tax rate was 14.5% (including Swachh Bharat Cess).
Between June 1, 2015 and November 14, 2015, the rate was 14% on value of taxable services.
Keep in mind that Google can't advise you on tax matters. Please contact your tax adviser for any questions about this change.