338.24% is the change from 102 to 447
Calculation steps:
[( 447 - 102 ) ÷ 102] x 100 = 338.24%
Formula
Percentage change = [(447 - 102) / 102] x 100
Subtract the new number by the original number
447 - 102 = 345
345 ÷ 102 = 3.3823529411764706
3.3823529411764706 x 100 = 338.24%