The easy way to ielts writing academic Module

The preposition “at” is widely used when describing specific
pieces of data. It also depends on some words such as “rate,”
“level,” “height,” “speed,” “peak as a verb,” and “stand as a
verb.”
The preposition “with”
The trend reached its highest point with 45% in 1990.
There was a remarkable decline to the lowest point, with 30% two
years later.
Germany came top in the table with 25 million travelers in 2006.
In writing task 1, “with” is mainly used with superlative
structures.
Prepositions “of”/“by”
There was a substantial increase of 12% in the amount of household
expenditure. (For example, the amount rose from 22% to 34%, which
shows a 12% increase.)
There was a minimal reduction of 2% in the annual income for X
company. (For instance, the income fell from 34% to 32%, showing a
2% difference.)
The interest rate reached a peak of 10% in 2005. (“of” is used with
“peak” as a noun.)
The employment rate was raised by roughly 5% in 2009. (For
example, it went up from 12% to 17%, showing a 5% increase.)