279.28% is the change from 111 to 421
Calculation steps:
[( 421 - 111 ) ÷ 111] x 100 = 279.28%
Formula
Percentage change = [(421 - 111) / 111] x 100
Subtract the new number by the original number
421 - 111 = 310
310 ÷ 111 = 2.7927927927927927
2.7927927927927927 x 100 = 279.28%