50% is the change from 44 to 66
Calculation steps:
[( 66 - 44 ) ÷ 44] x 100 = 50%
Formula
Percentage change = [(66 - 44) / 44] x 100
Subtract the new number by the original number
66 - 44 = 22
22 ÷ 44 = 0.5
0.5 x 100 = 50%
Example