Well, hopefully you know how to get Kelvin. For example. 1 degrees Celsius to Kelvin is 274.15. Celsius - Kelvin 273.15. Anyway, two other related equations would be x Celsius + 273.15 = y (Kelvin) and Celsius - Kelvin = Add 273.15
If the temperature in Celsius is 23 degrees, it would be 296.15 Kelvin.
300 Kelvin is greater than 25 Celsius. I got my answer because I know to get Celsius, you would add 273.15 to the celsius. 25 + 273.15 = 298.15. So 300 Kelvin is greater than 25 Degrees Celsius.
I hope this helps!!