How to change Sea surface temperature kelvin to degree Celsius

I Download S3B_SL_2_WST____20230804T044742_20230804T045042_20230804T065242_0179_082_247_2700_MAR_O_NR_003.SEN3 data for getting SST

After open a product sst it shows in kelvin unit.

How can I convert kelvin to degree Celsius?
I think to use bandmath operation Sea Surface Temperature - 272.15

Kindly suggest above method correct or any other methods available in SNAP?

Yes, bandmaths is the way to go. But it is actually -273.15