#creditscore

I made a purchase of 73k as a 24 months EMI using my credit card which has an 100k Limit. Now the EMI's per month will be approx 3.6k which is less than 30% of my credit limit but the total credit blocked from card is 73k which is roughly 73% od my credit limit. Will it impact my credit score?

Now my score has dropped from 746 to 726 and I do not know how this happened. Before the score dropped I did not have any credit card, I was just on loan... and the score dropped The next day I got a pre-approval card through the bank and I don't know how my score dropped....now how do I boost...