122.73% is the change from 220 to 490
Calculation steps:
[( 490 - 220 ) ÷ 220] x 100 = 122.73%
Formula
Percentage change = [(490 - 220) / 220] x 100
Subtract the new number by the original number
490 - 220 = 270
270 ÷ 220 = 1.2272727272727273
1.2272727272727273 x 100 = 122.73%