Based on porter's five forces - The threat of substitutes

The more tech-oriented companies are, the fewer people have to work -

How does tech threaten to replace/act as a substitute for human resources/jobs?

Just provide data and statistics, like the number of jobs affected during a certain period. And which sector has been affected the most?

You do not need to write a paragraph; provide some statistics and dada with references.

Please provide at least 3-5 references