122.22% is the change from 189 to 420
Calculation steps:
[( 420 - 189 ) ÷ 189] x 100 = 122.22%
Formula
Percentage change = [(420 - 189) / 189] x 100
Subtract the new number by the original number
420 - 189 = 231
231 ÷ 189 = 1.2222222222222223
1.2222222222222223 x 100 = 122.22%