10425% is the change from 4 to 421
Calculation steps:
[( 421 - 4 ) ÷ 4] x 100 = 10425%
Formula
Percentage change = [(421 - 4) / 4] x 100
Subtract the new number by the original number
421 - 4 = 417
417 ÷ 4 = 104.25
104.25 x 100 = 10425%
Example