101.01% is the change from 198 to 398
Calculation steps:
[( 398 - 198 ) ÷ 198] x 100 = 101.01%
Formula
Percentage change = [(398 - 198) / 198] x 100
Subtract the new number by the original number
398 - 198 = 200
200 ÷ 198 = 1.0101010101010102
1.0101010101010102 x 100 = 101.01%