A value-weighted index consists of five stocks. The stock price and number of shares on the base date (last year) and current year are as in the table above. If the index in the last year was 100, what is the index value and its change in percentage after this one-year period?

Saham (Stock) Tahun lepas (Last year) Harga saham Bilangan saham (Stock price) (Number of ($) shares) 4.00 3,000,000 4.20 3,050,000 1.80 4,500,000 16.50 600,000 75.00 400,000 Tahun kini (Current year) Harga saham Bilangan saham (Stock price) (Number of ($) shares) 7.50 1,500,000 5.30 3,050,000 1.60 4,500,000 14.20 600,000 31.00 800,000 II IV V