How to Calculate Percentage in HR and Payroll (with Real Examples for HR Teams)
Understanding how to calculate percentages is essential in HR and payroll operations. Whether you're managing salary increases, bonuses, commissions, or evaluating software ROI, mastering these basics helps HR professionals work more efficiently. In this article, we’ll explore how percentage calculations apply to HR software, payroll systems, and everyday HRM tasks.
What is a Percentage?
A percentage expresses a number as a part of 100 and is denoted by the % symbol. In a modern HR system or payroll program, percentages are used for salary raises, bonuses, commissions, and tax deductions.
1. Calculating Salary Increases in Your Payroll Software
Formula:
Percentage Increase = (New Salary − Old Salary) ÷ Old Salary × 100
Example:
An employee’s salary increases from 35,000 THB to 40,250 THB.
(40,250 − 35,000) ÷ 35,000 × 100 = 15%
This 15% raise should reflect automatically in a reliable payroll software like ByteHR.
2. Converting a Raise Percentage into THB
Formula:
Raise Amount = Current Salary × Raise % ÷ 100
Example:
7% of 42,000 THB = 42,000 × 7 ÷ 100 = 2,940 THB
This helps when entering values into your payroll system or HR program.
3. Calculating Bonus Payouts in a Payroll Program
Bonuses are often paid out based on a percentage of salary, annual revenue, or performance score. Most HR software includes bonus calculation tools to streamline this.
Formula:
Bonus = Base Salary × Bonus % ÷ 100
Example:
If an employee receives a 20% year-end bonus on a monthly salary of 50,000 THB:
50,000 × 20 ÷ 100 = 10,000 THB
This can be automated in your payroll program to ensure accuracy and fairness.
4. Calculating Sales Commission in HR Software
Formula:
Commission = Sales × Commission % ÷ 100
Example:
150,000 THB in sales with a 4% commission = 6,000 THB
Configuring commission rules is easy in a well-designed HR system.
5. Calculating Profit Percentage in Sales
Formula:
Profit % = (Selling Price − Cost Price) ÷ Cost Price × 100
Example:
Selling HR software for 30,000 THB with a cost of 24,000 THB:
(30,000 − 24,000) ÷ 24,000 × 100 = 25%
Understanding this helps HR teams justify investment in a new HRM system.
Conclusion
From bonuses to salary raises, commissions to profits, percentage calculations are essential across HR tasks. With ByteHR’s cloud-based HR software and payroll system, you get accurate, automated calculations and full control—making HR and payroll easier than ever.
Whether you're running an HR program for a small team or managing complex compensation structures in a large organization, ByteHR supports every stage of your HRM journey.