249.09% is the change from 220 to 768
Calculation steps:
[( 768 - 220 ) ÷ 220] x 100 = 249.09%
Formula
Percentage change = [(768 - 220) / 220] x 100
Subtract the new number by the original number
768 - 220 = 548
548 ÷ 220 = 2.4909090909090907
2.4909090909090907 x 100 = 249.09%