Mathematical Index & Solver

Percentage Calculations Directory

Browse 1,100+ fully-solved mathematical percentage problems. Every calculation includes copyable Excel and Google Sheets formulas, step-by-step solutions, and discount & sales tax breakdowns.

Most Frequently Searched Calculations

Universal Excel & Google Sheets Percentage Formulas

Calculate P% of Amount:
=A1 * 10%
Discounted Sale Price:
=A1 * (1 - 20%)
Add Sales Tax:
=A1 * (1 + 8.5%)

Calculations by Percentage Rate

Select standard rate tiers to view calculations across different values.