KNOWLEDGE TOOLS / PRIVATE BY DEFAULT
Make the number answer the question.
Small interactive labs for checking calculations and comparability. Inputs stay in your browser and are never treated as financial advice.
Percentage Change Lab
Compare starting and ending values, then separate absolute change, relative change and percentage points.
OPEN TOOL →TOOL 02 / EvidenceComparison Builder
Check whether two statistics share a year, unit and source before treating the result as comparable.
OPEN TOOL →THE RULE
Calculation is only half the work.
Before sharing a result, keep the starting value, ending value, unit, period, source and limitations visible. A precise calculation cannot repair mismatched definitions.