Explanation:

- To determine the relative profit jump, we calculate the percentage increase in profit from 2019 to 2020 for each company.

- Company X:

2019 profit = 20.7, 2020 profit = 25.8

Relative profit jump = $\frac{25.8-20.7}{20.7}\times 100\approx 24.64\mathrm{\%}$

- Company Y:

2019 profit = 5.5, 2020 profit = 9.5

Relative profit jump = $\frac{9.5-5.5}{5.5}\times 100\approx 72.73\mathrm{\%}$

- Company Z:

2019 profit = 12, 2020 profit = 14

Relative profit jump = $\frac{14-12}{12}\times 100\approx 16.67\mathrm{\%}$

- Company W:

2019 profit = 12.5, 2020 profit = 20.5

Relative profit jump = $\frac{20.5-12.5}{12.5}\times 100\approx 64.00\mathrm{\%}$

- The maximum relative profit jump is for Company Y.