“增长的百分数”常见的英文表达是 “percentage of increase” 或 “increase percentage” 。
percentage of increase：侧重于表达增长部分在整体中所占的百分比比例概念。例如：We need to calculate the percentage of increase in sales this month.（我们需要计算本月销售额的增长百分数。）
increase percentage：更直接地强调增长的百分比数值。例如：The increase percentage of the population in this area is quite significant.（这个地区人口的增长百分数相当可观。）