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How to Calculate Percentage in Excel: Every Formula You Need

2026-03-18

Percentage of Total

What percentage of the total does this row represent? Value in A2, total in A100:

=A2/SUM(A$2:A$100)

Percentage Change

Calculate the percentage increase or decrease between old (A2) and new (B2) values:

=(B2-A2)/A2

Add a Percentage

Increase a price by 15%:

=A2*(1+0.15)

Subtract a Percentage (Discount)

Apply a 20% discount:

=A2*(1-0.20)

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