Show price increase in % in addition to £ to understand the inflation

please additionally show the price difference in percentage. I had a shock of a supermarket product which cost £2.00 last week increased to £3.58 which the app shows as "£1.58 more" however it is actually 79% more! While the annual inflation is supposed to be 10% according to the official figures, the weekly food product price inflation (on some products) is now at 79%. Consumers deserve to know this, because nobody's salary has gone up by 79% in a week ...