HTML page showing Excel Spreadsheet

I would suggest to embed the Excel spreadsheet directly in your WordPress webpage. There are 2 ways to do it.

Microsoft OneDrive Excel Web App
If you don’t want to install another plugin and have access to OneDrive account, then OneDrive Excep Web App is the better option. You can find the step by step guide with the screenshots on following link:

https://support.office.com/en-US/article/Share-it-Embed-an-Excel-workbook-on-your-web-page-or-blog-from-OneDrive-804e1845-5662-487e-9b38-f96307144081

You can tweaks the appearance and size as per your liking.

By using Plugin
If you prefer the plugin option, then following 2 plugins are good choices:
Embed Any Document
Google Doc Embedder

Both plugins offer different options to control the appearance and size.

It would be better if you embed the spreadsheet on a full width page to get the better viewing result.