Calcolatore Variazione Percentuale

Calcola la variazione percentuale tra due valori. Aumento e diminuzione percentuale.

Pct Change

15.00 %

Pct Diff13.95 %
Abs Change12.00
Ratio1.1500

Formula

Percentage Change vs Percentage Difference

Percentage Change

% Change = ((New - Original) / Original) × 100

Used when there is a clear "before" and "after" value.

Percentage Difference

% Difference =New - Original/ ((Old+New) / 2) × 100

Used when comparing two values without a clear reference (e.g., comparing two measurements).

Esempio Risolto

A value changed from 80 to 92.

  1. 01% Change = (92 - 80)/80 × 100 = 12/80 × 100 = 15%
  2. 02% Difference = 12/86 × 100 ≈ 13.95%
  3. 03Absolute change = 12
  4. 04Ratio = 92/80 = 1.15

Domande Frequenti

What is the difference between percentage change and percentage difference?

Percentage change uses the original value as the denominator (directional). Percentage difference uses the average of both values (symmetric, no direction).

Can percentage change be negative?

Yes, a negative percentage change indicates a decrease. For example, going from 100 to 80 is a -20% change.

What is percentage error?

Percentage error = |experimental - theoretical| / |theoretical| × 100. It measures the accuracy of a measurement against a known standard.

Impara

How to Calculate Percentages - Complete Guide

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