Doubling a number means increasing it by 100%. Here’s why:
When you double a number, you multiply it by 2. For example, if you have the number 50 and you double it, you get 100. The increase from 50 to 100 is 50, which is exactly 100% of the original number.
In mathematical terms, a 100% increase means the value has grown by its original amount. So, doubling a number is indeed a 100% increase.