100% is the change from 444 to 888
Calculation steps:
[( 888 - 444 ) ÷ 444] x 100 = 100%
Formula
Percentage change = [(888 - 444) / 444] x 100
Subtract the new number by the original number
888 - 444 = 444
444 ÷ 444 = 1
1 x 100 = 100%
Example