The way that particular board is set up there is no way to change the I2C address so you are stuck with the one that they have configured, 0x27.
I can't tell what chip is being used but some I2C interface chips have one or more 'address' pins making it possible to select two or more addresses. If that chip is one of them then it is conceivable that you could rework some of the traces on the PC board and change the address. This is not a trivial operation but it is not impossible either.
Don