Percentages Calculators
8 free percentages calculators — all with step-by-step working shown
Find percentages, percentage change and reverse percentages instantly.
Percentage Calculator
Find percentages, percentage change and more instantly
Percentage of a Number
Find X% of any number with working shown
Percentage Change Calculator
Calculate percentage increase or decrease with working
Percentage Increase Calculator
Calculate the new value after a percentage increase
Percentage Decrease Calculator
Calculate the new value after a percentage decrease
Reverse Percentage Calculator
Find the original value before a percentage change
Percentage to Decimal Calculator
Convert any percentage to a decimal instantly
Decimal to Percentage Calculator
Convert any decimal to a percentage instantly
Why step-by-step working matters
Percentage calculations appear in everyday life — from exam questions to sale prices. Our percentage calculators handle every type: finding a percentage of a number, calculating percentage change, working out reverse percentages and converting between decimals and percentages, all with clear step-by-step working.
Unlike calculators that show only the final answer, every Pythagorist tool displays the complete method — the same working you would write in an exam. This means you can understand the process, not just copy a number. Students who understand the method score more marks, because examiners award points for correct working even when the final answer contains an arithmetic error.