300% is the change from 220 to 880
Calculation steps:
[( 880 - 220 ) ÷ 220] x 100 = 300%
Formula
Percentage change = [(880 - 220) / 220] x 100
Subtract the new number by the original number
880 - 220 = 660
660 ÷ 220 = 3
3 x 100 = 300%
Example