This SAT Math video tutorial provides a basic introduction into calculating the percent increase and decrease of an event using the percent change formula. It also explains how to solve word problems involving population growth and how to write functions that will help you to calculate the future population value.
Here are some other useful links:
SAT Math Part 35:
https://www.youtube.com/watch?v=-KjlETcBscs
SAT Chemistry Part 1:
https://www.youtube.com/watch?v=N-clMX2poLY
Chemistry Final Exam Review:
https://www.youtube.com/watch?v=5yw1YH7YA7c
Algebra Final Exam Review:
https://www.youtube.com/watch?v=RSqhRY74_rA&t=3348s
Geometry Final Exam Review:
https://www.youtube.com/watch?v=puxjcvBL2IE
Physics Final Exam Review:
https://www.youtube.com/watch?v=6trm5kEGodw
Trigonometry Final Exam Review:
https://www.youtube.com/watch?v=bb0x7SFp-aM
PreCalculus Final Exam Review:
https://www.youtube.com/watch?v=d35NSIQy1Ds
Calculus Final Exam Review:
https://www.youtube.com/watch?v=ZTx5KJEC-ks