1850% is the change from 18 to 351
Calculation steps:
[( 351 - 18 ) ÷ 18] x 100 = 1850%
Formula
Percentage change = [(351 - 18) / 18] x 100
Subtract the new number by the original number
351 - 18 = 333
333 ÷ 18 = 18.5
18.5 x 100 = 1850%
Example