What are the charges on international transaction on my IDFC FIRST Bank Credit Card?

I am planning to use my idfc first credit card for an internatonal transaction. What are the charges for it?

Forex charges on varipus IDFC credit card are-
IDFC FIRST Millenia Credit Card and IDFC First Classic Credit Card- 3.5%
IDFC FIRST Select card has a 1.99%.
IDFC FIRST Wealth card- 1.5%.
IDFC FIRST WOW Credit Card- 0%
IDFC First HPCL Power Credit Card- 3.5%