Help! don't understand this problem.

Question

Bob Forrester is retired and owns a home. Two years ago, Bob's net worth was $650,000. Last year, his net worth was $740,500. What is the approximate percent of increase or decrease between two years ago and last year?

Answer 1

$740,500-$650,000=$90,500

 

$90,500/$650,000≈0.13923=13.923% increase

 

you put the difference of the two amounts over the original amount and express as a percent