109.03% is the change from 421 to 880
Calculation steps:
[( 880 - 421 ) ÷ 421] x 100 = 109.03%
Formula
Percentage change = [(880 - 421) / 421] x 100
Subtract the new number by the original number
880 - 421 = 459
459 ÷ 421 = 1.0902612826603326
1.0902612826603326 x 100 = 109.03%