Fractions, Decimals & Percentages

Percentage Change Workshop

Apply percentage increases and decreases to a visual bar. Discover why a 50% increase then 50% decrease does not return to the original.

Why this tool helps: Students assume percentage changes are reversible. The visual bar makes the changing base immediately obvious.

Year levels: Year 7, Year 8, Year 9, Year 10 Curriculum: Australian Curriculum aligned

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All Math Lab tools — including Percentage Change Workshop — are included with any active SubjectCoach subscription (Essentials, Advanced or Premium). Existing legacy yearly subscribers retain access too.

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Try these free tools — no subscription needed

Every Number & Place Value lab is free for everyone:

Place Value Machine — build numbers with base-10 blocks
Number Line Explorer — fractions, decimals, negatives, surds
Integer Operations Visualiser — animated negative-number arithmetic
Order of Operations Stepper — BODMAS, step by step