256.36% is the change from 220 to 784
Calculation steps:
[( 784 - 220 ) ÷ 220] x 100 = 256.36%
Formula
Percentage change = [(784 - 220) / 220] x 100
Subtract the new number by the original number
784 - 220 = 564
564 ÷ 220 = 2.5636363636363635
2.5636363636363635 x 100 = 256.36%