# Compare saves per reach across Instagram carousels

Use the save and reach measures actually reported by your source, with the same definitions and observation window. Calculate 100 × saves ÷ reach, then inspect the underlying counts. A higher ratio and a larger total answer different questions.

Comparison question:
Account and source report:
Save definition:
Reach definition:
Observation window and time zone:
Carousel A and publication reference:
Carousel A saves and reach:
Carousel B and publication reference:
Carousel B saves and reach:
Decision criterion chosen before comparison:
Paid activity or other distribution changes:
Topic and audience differences:
Calculated ratios:
Conclusion and uncertainty:
Next test or production decision:
CSV ratio formula for E2: =IF(D2>0,100*C2/D2,"")


"record_type","asset","saves","reach","saves_per_reach_pct","window","definition_notes"
"fictional example","Carousel A","8","200","4","same illustrative window","Matched definitions assumed for the example"
"fictional example","Carousel B","12","600","2","same illustrative window","Matched definitions assumed for the example"
"your observation","","","","","",""


## Worked comparison

"Fictional carousel","Saves","Reach","Saves per reach"
"Carousel A","8","200","4%"
"Carousel B","12","600","2%"


## Compare the count and the ratio

Fictional comparison: Carousel A has 8 saves from reach of 200, or 4%; Carousel B has 12 saves from reach of 600, or 2%.

Original illustrative inputs. B has more saves in total; A has the higher descriptive ratio. Neither figure establishes a causal effect or a unique-person conversion probability.

Figure: https://boostsy.net/resource-figures/saves-reach-comparison.png

## Use the comparison for the actual decision

If the task is producing more saved material in total, the absolute count matters. If the task is comparing saves relative to the reported reach, the ratio helps describe that relationship. Choose the criterion before looking for a favourable result.

A reach denominator of zero has no defined ratio. Record it as unavailable, not 0%. The downloadable example values are static illustrations; enter the shown formula in the ratio column for your own spreadsheet calculation.

Do not add post-level reach figures and call the sum unique people across the account. Keep the source's definitions and any overlap or reporting gaps visible when aggregating.

## Before drawing a conclusion

- [ ] The save and reach definitions match.

- [ ] Observation windows are comparable.

- [ ] Topic, audience and distribution changes are recorded.

- [ ] Both counts are visible beside the ratio.

- [ ] Fictional example rows are removed from any actual account report.