I have totalnumberofdays and percentage on day 1. I have to incrementally grow the currentpercentage every day so that it reaches 100 percent on day n
For ex:
If totalnumberofdays = 7, percentage on day 1 = 1
currentpercentage would be equal to percentage on day 1 the first day and then needs to grow incrementally.
Day 1 1 percent
Day 2 2 percent
Day 3 5 percent
Day 4 10 percent
Day 5 20 percent
Day 6 50 percent
Day 7 100 percent
How should currentpercentage be calculated for each day.
The problem is stated confusingly because growth is often calculated as a percentage, but growth in percentage uses this term twice. Are you sure you are not confused with the terms?
Apart from that, this just looks like an exponential function:
Define $p_1$ as the percentage on day 1, and in general $p_i$ the percentage on day $i$. And a daily growth of (percentage) $q$
Then we have:
$$p_i = p_1 \cdot q ^ {i-1}$$
With formulas from your textbooks (or comments), you should be able to calculate $q$ from $p_1$, $n$, etc.