Answer:
102.7
Explanation:
your starting number is 147,
your earned number is 298,
to get the percentage, it will be in decimal form
the answer is- 
102.72108843537416 %
Now you round to the nearest tenth- 
102.7
I hope this helps you- 
Step 1: Calculate the change (subtract old value from the new value) ...
Step 2: Divide that change by the old value (you will get a decimal number) 
Step 3: Convert that to a percentage (by multiplying by 100 and adding a "%" sign)