What is the relative humidity on a day in July in Mumbai

What is the relative humidity on a day in July in Mumbai when the partial pressure of water vapour is 0.013 x ${{10}^{5}}$ Pa and the temperature is 15°C ? The vapour pressure of water at this temperature is 0.0169 x ${{10}^{5}}$ Pa.

Using relative humidity
Y =Partial Pressure /Vapour Pressure x 100
= 0.013 x ${{10}^{5}}$ /0.0169 x ${{10}^{5}}$ x 100=76.92=77%