[(25 - 20)/20]100 = 500/20 = 25%
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30/25 x 100 - 100 = 20 Therefore, the percentage increase is 20 percent.
To increase 80 by 25%, you first convert 25% to a decimal by dividing by 100, giving you 0.25. Then, you multiply 80 by 0.25 to find the amount of the increase, which is 20. Finally, you add the increase to the original number: 80 + 20 = 100. So, increasing 80 by 25% gives you a total of 100.
There will be an overall increase in the first number.
25 - (20%) = 20
25% increase.