What exactly did you change? What was contributed by each listed person?
On "Notable changes" section, it already list all notable changes. On each change, it has a link which leads to Pull Request which can be used to find out who contribute that changes. But if you mean code change, you can use GitHub compare feature. For example,
https://github.com/bitcoin/bitcoin/compare/v27.0...v27.1 compare code between v27.0 and v27.1.