99.55% is the change from 220 to 439
Calculation steps:
[( 439 - 220 ) ÷ 220] x 100 = 99.55%
Formula
Percentage change = [(439 - 220) / 220] x 100
Subtract the new number by the original number
439 - 220 = 219
219 ÷ 220 = 0.9954545454545455
0.9954545454545455 x 100 = 99.55%