Percentage Calculator

Percent of · percent change · discount

Input

A (value)

B (base)

Old value

New value

Original price (₩)

Discount (%)

Result

How it works

A is ?% of B = A ÷ B × 100.
Percent change = (new − old) ÷ old × 100. A 20% drop needs a 25% rise to recover.
Korean prices include 10% VAT; the VAT part is price ÷ 11.

FAQ

How do I calculate percentage change?

(New − old) ÷ old × 100. From 80 to 100 is +25%.