In the year 2008, the amount of electricity generated from coal in the UK was 124 Terawatt hours (TWh). By 2018, this had decreased to 16 Terawatt hours (TWh).
Calculate the percentage decrease in coal-generated electricity between 2008 and 2018.
Give your answer to two decimal places.
You must show your working.
87 exam-style questions on OCR A GCSE Geography Numerical and statistical skills. Each one has a worked solution and a mark scheme showing where the marks go.