My iPhone drops 2% of battery in a week

That’s pretty much normal. The amount of battery percentage loss is variable. You could go a month without loosing any at all, and the next month loose 2%. What you’re experiencing is about average.

iPhone is rated for 500 charge cycles before it reaches 80% maximum capacity.

For more information, see this article:

iPhone Battery and Performance - Apple Support

In general and on average, battery health will decline at about 1% for every 25 charge cycles.

You have had almost 300 charge cycles, so 300 divided by 25 = 12%.

It would be normal to expect that your battery health was in the 88% range at this point, so your battery at 93% is doing great. So far, quite a bit better than average, I would say.

By comparison, the battery is my phone has had about 250 charge cycles and the battery health reads right at what would be normal and expected.....90%.

Lucky you. You might want to consider sending flowers to Apple.