Can someone please simplify the difference between fair value and revaluation model? And explain the table in the given image. Thanks!

Revaluation model - If property is revalued and gain is recognized in equity, it will be subsequently amortized and moved via equity and not P/L. Same is the case with revaluation loss. Mind you, Impairment will still be charged via P/L ( as per my understanding) someone correct me if I am wrong here.
Fair Value Gain/Loss is moved through P/L

Table is fairly straight forward though:

1- Owner occupied (PPE) to Investment Property

e.g

1-
PPE=100
Revalued Amount=105
Revaluation surplus=5

2-
PPE=90
Impairment Loss previously recognised= 10
Revalued Amount= 110

New PPE=110
Impairment Reversal =10
Revaluation Surplus=10

2- Inventory to Investment Property

FV gain/loss recorded since inventory is not non current asset and also its recorded at lower of cost or nrv and any downward movement is recorded in P/L

3- Invesment Property to PPE

New cost assigned is the FV of the asset as of that date.

I would suggest you to read Non Current Assets thoroughly for further clarification.

P/L = Income Statement