198% is the change from 100 to 298
Calculation steps:
[( 298 - 100 ) ÷ 100] x 100 = 198%
Formula
Percentage change = [(298 - 100) / 100] x 100
Subtract the new number by the original number
298 - 100 = 198
198 ÷ 100 = 1.98
1.98 x 100 = 198%
Example