111.06% is the change from 199 to 420
Calculation steps:
[( 420 - 199 ) ÷ 199] x 100 = 111.06%
Formula
Percentage change = [(420 - 199) / 199] x 100
Subtract the new number by the original number
420 - 199 = 221
221 ÷ 199 = 1.1105527638190955
1.1105527638190955 x 100 = 111.06%