growth rate; rate of increase
Common in economic, statistical, and business contexts for percentage change over time.
This year's GDP growth rate is forecast at 2%.
The sales growth rate is slowing down.
elongation percentage; elongation rate
Technical term in physics and materials science for the percentage a material stretches before breaking.
This material recorded an elongation percentage of 20% in the test.
This year's sales growth rate is high.
They measured the elongation rate of the rubber.
The growth rate of exports is slowing down.
The economist calculated the GDP growth rate.