📈 Marketing percentage calculators

Written by Rohan Mehta Updated
Editorial details Reviewed by Vikram Sen Verified · Methodology · Accuracy policy

Quick answer

Free tools for campaign lift, conversion change, market share, and pricing tests—pick the calculator that matches how you word the KPI.

Relative change: ((new − old) / old) × 100 · Share of segment: (your units ÷ segment units) × 100

Best for: A/B summaries, promo pricing, share of voice proxies, funnel stage conversion.

Also see: Change calculators · Business hub · Percentage guide

Start with the KPI you measure—lift on conversion, share of a defined market, or price change—then open the linked tool so baseline definitions stay consistent.

Key facts

Lift / growth framing Often ((after − before) / before) × 100 on KPIs such as CTR or CVR.
Category Marketing / growth
Related concepts Percentage difference, market share, margin.

Definitions

Lift

Often framed as percentage increase in conversion or CTR versus a control.

Market share

Your slice ÷ defined market total—keep the denominator consistent when comparing periods.

Comparison table

Topic Guidance
Increase vs change Increase assumes up; signed change covers both directions.
Share vs growth Share is a slice at a point in time; growth compares two periods.

❓ Frequently Asked Questions

Which tool is best for A/B test results?

Start with percentage increase or change on the metric you measured; document baseline definitions.

How do I express funnel drop-off?

Often as percent of stage volume; pair with the statistics hub for pass-rate style KPIs.

Where is SEO CTR math?

Use percentage change or percent-of-total depending on whether you compare rates or count clicks vs impressions.

Glossary references

Pair percent language with conversion pages when you mix fractions, decimals, and ratios.