1900% is the change from 18 to 360
Calculation steps:
[( 360 - 18 ) ÷ 18] x 100 = 1900%
Formula
Percentage change = [(360 - 18) / 18] x 100
Subtract the new number by the original number
360 - 18 = 342
342 ÷ 18 = 19
19 x 100 = 1900%
Example