Percentage Calculator
Calculate percentages, parts, whole values, adjustments, and percentage changes instantly in your browser.
No upload
Whole, percentage, and part
Edit any two fields. The third is calculated automatically.
Enter two values to start the linked percentage calculation.
Percentage relationship
- Part / percentage value
- —
- Percentage factor
- —
- Complementary percentage
- —
Apply to the whole
- Whole + part
- —
- Whole − part
- —
Compare values
Enter a starting value and a new value. The change is calculated instantly.
- Difference
- +20
- Percentage change
- +25 %
- Direction
- Increase
- New value relative to starting value
- 125 %
Calculation steps
Δ = N − A Δ = 100 − 80 Δ = +20 % = Δ / |A| × 100 % = 20 / |80| × 100 % = +25 %