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how do you calculate percentage increase bbc bitesize. Calculate the interest on borrowing 40 for 3 years if the simple interest rate is 5 per year. As the watch has gone up in price this is 25.
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Add this to the original figure to get 840. Percentage change frac text difference text original frac 10 40 frac 1 4 take out a common factor of 10 25. Divide the increase by the original number and multiply the answer by 100.
Percentage change frac text difference text original frac 10 40 frac 1 4 take out a common factor of 10 25.
Step 3 Divide the final number by the decimal to get back to the original number. Step 1 Write down the starting value and end value. How to work out percentage increase. 1445 - 12501250 100 1951250 100.
