Answer:40.42553191489361% increase
Explanation: How To Do: The percentage increase is found by dividing the increase by the starting number, then multiplying that result by 100%.
Percent Change = (Increase ÷ First Value) x 100%
Note: the percent increase measures FROM the first value. An increase from 50 of 25 is a change of 50% (25 is the difference between the two numbers, and 25 is 50% of 50). If that increase were looked at the other way around, it would be a different percentage change (75 decreases by 25 to 50 is a decrease of 33.3%).