100% is the change from 22 to 44
Calculation steps:
[( 44 - 22 ) ÷ 22] x 100 = 100%
Formula
Percentage change = [(44 - 22) / 22] x 100
Subtract the new number by the original number
44 - 22 = 22
22 ÷ 22 = 1
1 x 100 = 100%
Example