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Crypto & AI

Check a number

Enter the starting and ending values from a claim. The calculation shows the change between those values; you still need to check where they came from and whether they measure the same thing.

Compare the values

Use relative change for counts or quantities. Use percentage points when both values are percentages of a total.

The earlier value is the base for relative change. For a percentage, enter 40 for 40%.

Use the same unit and measurement rule as the starting value.

Enter up to 12 digits before the decimal point and 6 after it, such as 100 or 0.5. Do not include a sign, commas, units, % or abbreviations.

Clear inputs

Read the result

Start with an example or your own input

The result will appear here with an explanation of what it does and does not establish.

How to read it

  1. Find the base and the unit

    What was the starting value? What is counted or measured? For a percentage, find the numerator and the total it is divided by.

  2. Match the period and the sample

    Compare equal observation windows and the same measurement rule. For a model score, check the test set, scoring method and run conditions. If these changed, arithmetic alone cannot explain the difference.

  3. Open the source

    Find the original table, report or experiment. Record its date and method. A screenshot or a repeated claim may omit the inputs needed to reproduce the number.

Same arithmetic, different claims

Invented example

Crypto: an observed count

A fictional table counts 100 transaction-sending addresses in one seven-day window and 150 in the next, on the same network using the same rule.

(150 − 100) ÷ 100 × 100 = +50%

The count rose by 50 addresses, or 50% relative to the first window's 100 addresses.

An address count is not a count of people. The increase alone does not establish adoption or explain what caused the change.

Invented example

AI: a percentage already has a denominator

Two fictional model runs answer 40 and 60 of the same 100 test questions correctly under the same scoring rule.

60% − 40% = +20 percentage points; (60 − 40) ÷ 40 × 100 = +50% relative change

Accuracy increased from 40% to 60%: 20 percentage points, which is a 50% increase relative to 40%.

This describes those test runs. It does not establish performance on other tasks, a typical improvement across runs or a statistically reliable difference.

Keep the conclusion within the evidence

  • This tool uses the values you enter; it does not fetch a post, dataset or source.
  • It compares two values. It does not annualize a change, calculate compound growth or estimate uncertainty.
  • A price change is not a person's investment return: their trades, position size, fees and timing require separate records.

Sources & next reads

Try the worked reading exercise →