Read the metrics together
Imagine a page gets more impressions while its average position falls. That can happen when it starts appearing for more queries. A single metric does not tell you whether the page is reaching a wider audience or losing visibility for its established searches.
Compare like with like
Use comparable time periods and keep your filters consistent. Start with the same property, pages, country, and device. Note any differences in the available data before you interpret a change as a trend.
Break down the change
Split the results by query, device, and country. Look for the segments contributing the most to the change in clicks. Compare impressions and position within those segments, then inspect the pages involved. This helps you form a more specific question than ‘Why did my ranking fall?’
Check before you edit
Review the page and the intent of the relevant queries before rewriting content. Keep a record of your hypothesis and the evidence supporting it. Search performance can change for several reasons, so avoid treating one comparison as proof of cause and effect.