Devaluation HDFC SmartBuy New Charges on Amazon & Flipkart Voucher Purchase

[sousnake]

For purchasing apay gv (10000+1035-10413) = 622
Profit % = (622/10000)×100 = 6.22%

here's the definition of profit % calculation =
profit % = (proft)/(cost price) * 100 (here cost price is price of obtaining something or producing something).
here your cost price is not 10000 rather 10413 because that's what you are paying to obtain your rewards.
so profit % = 622/10413*100 = 5.97

So 6 we can say