Current 6.5 BTC per block:

➡️ 936 BTC/day (~340,000 BTC/year)/ 19,600,000 BTC in circulation *100 = 1.73% inflation.

Post halving 3.25 BTC per block:

➡️ 468 BTC/day (~171,000 BTC/year)/19,700,000 BTC in circulation *100 = 0.87% inflation.

Inflation rate of gold somewhere around 1.5%.