Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions
Start free 5-day trial
Read 563 reviewsTarget Test Prep

Percent Change vs. New Percent

Problem Solving — algebra and arithmetic
Expert replies
Post new topic Post Reply
Subscribe topic
Previous Topic Next Topic
User avatar
Senior | Next Rank: 100 Posts
Posts: 40
Joined: Mon Sep 24, 2012 12:07 am
Location: Kabale, Uganda
Thanked: 1 times
by pscher31 » Sun May 12, 2013 9:15 am
Can someone please clarify when to use the PC formula (PC=CV/OV) vs. the NP formula (NP=NV/OV). I'm having trouble identifying when to use each in PS questions. Some examples would be fantastic. Thanks in advance.
Top
Join the discussion
Source: — Quantitative Reasoning |
User avatar
MBA Admissions Consultant
Posts: 2278
Joined: Fri Nov 11, 2011 7:51 amFollowed by: 266 members
Location: New York
Thanked: 660 times
GMAT Score:770

by Jim@StratusPrep » Mon May 13, 2013 8:33 am
By new percent, do you mean 'percent of'?
GMAT Answers provides a world class adaptive learning platform.
-- Push button course navigation to simplify planning
-- Daily assignments to fit your exam timeline
-- Organized review that is tailored based on your abiility
-- 1,000s of unique GMAT questions
-- 100s of handwritten 'digital flip books' for OG questions
-- 100% Free Trial and less than $20 per month after.
-- Free GMAT Quantitative Review

Image
Top
Join the discussion
User avatar
Senior | Next Rank: 100 Posts
Posts: 40
Joined: Mon Sep 24, 2012 12:07 am
Location: Kabale, Uganda
Thanked: 1 times

by pscher31 » Tue May 14, 2013 11:30 pm
Yes sorry, I meant percent of.
Top
Join the discussion
User avatar
MBA Admissions Consultant
Posts: 2278
Joined: Fri Nov 11, 2011 7:51 amFollowed by: 266 members
Location: New York
Thanked: 660 times
GMAT Score:770

by Jim@StratusPrep » Wed May 15, 2013 7:59 am
Here is a start:

OG 13:

PS:

8
21
58
94
177
181

DS:
151
GMAT Answers provides a world class adaptive learning platform.
-- Push button course navigation to simplify planning
-- Daily assignments to fit your exam timeline
-- Organized review that is tailored based on your abiility
-- 1,000s of unique GMAT questions
-- 100s of handwritten 'digital flip books' for OG questions
-- 100% Free Trial and less than $20 per month after.
-- Free GMAT Quantitative Review

Image
Top
Join the discussion

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 2095
Joined: Tue Dec 04, 2012 3:22 pmFollowed by: 247 members
Thanked: 1443 times

by ceilidh.erickson » Fri May 17, 2013 9:12 am
The best strategy is to stop thinking in terms of formulas, and think in terms of concepts instead!

Percent change - this will be asking you about the difference between an old situation and a new situation. Look for language of "percent increase," "percent decrease," or "percent change." This will indicate that you're comparing the change to the original:
percent change = (new - original)/original, or difference/original

#57. Company P had 15 percent more employees...
#71. ... the number of stocks... was 20 percent greater...
#94. ... what was the percent increase?
#114. ... what was the percent change?
#115. ... by approximately what percent did the ratio decrease?
#177. ... by what percent did the ratio of price per share increase?
#182. ... what was the approximate profit or loss...

Percent of - this will ask you to simply compare the new value to the original value, but not to calculate the difference. You basically just want to look for language of "percent of."
Percent of = new/original

#21. 150 is what percent of 30?
#58. ... what percent of the original...
# 123. ... what percent of Juan's income is Mary's?
#171. ... the remaining solution will be what percent sodium...
Ceilidh Erickson
EdM in Mind, Brain, and Education
Harvard Graduate School of Education
Top
Join the discussion