109.45% is the change from 201 to 421
Calculation steps:
[( 421 - 201 ) ÷ 201] x 100 = 109.45%
Formula
Percentage change = [(421 - 201) / 201] x 100
Subtract the new number by the original number
421 - 201 = 220
220 ÷ 201 = 1.0945273631840795
1.0945273631840795 x 100 = 109.45%