What is the proper method to compare histograms (or statistical data) between two data sets?

Hi,

I have a set of data for Company A and Company B which tells me the number of times people visited each company in the month of March.

I'm seeing a stark difference between the data for each company, but I don't know how to define it or explain it mathematically (or statistically?).

In my first column of data, I have the number of times a person visited the store.
In the second column of data, I have the total number of people who visited the store that many times.

When grouping these data points into buckets, I notice quite a different drop off rate (I don't think that's the correct term) from one bucket to the next. What I'd like to know is how I can better explain this phenomenon, with the right terms to use, and also would like guidance on the correct type of analysis to do.

I've included my spreadsheet in the attachment, and catch on to concepts quickly - just need some education and guidance here please.

Thank you!
ExpExchange-Question.xlsx