Absolute and percentage changes between the two periods.
Change in absolute clicks.
Percentage change in clicks.
Change in absolute CTR.
Percentage change in CTR.
Change in absolute impressions.
Percentage change in impressions.
Change in absolute average position.
Percentage change in average position.
Metrics for the primary (current) period.
Metrics for the comparison (past) period.
Result of comparing performance between two date ranges.