1390% is the change from 20 to 298
Calculation steps:
[( 298 - 20 ) ÷ 20] x 100 = 1390%
Formula
Percentage change = [(298 - 20) / 20] x 100
Subtract the new number by the original number
298 - 20 = 278
278 ÷ 20 = 13.9
13.9 x 100 = 1390%
Example