50% is the change from 444 to 666
Calculation steps:
[( 666 - 444 ) ÷ 444] x 100 = 50%
Formula
Percentage change = [(666 - 444) / 444] x 100
Subtract the new number by the original number
666 - 444 = 222
222 ÷ 444 = 0.5
0.5 x 100 = 50%
Example