65.56% is the change from 270 to 447
Calculation steps:
[( 447 - 270 ) ÷ 270] x 100 = 65.56%
Formula
Percentage change = [(447 - 270) / 270] x 100
Subtract the new number by the original number
447 - 270 = 177
177 ÷ 270 = 0.6555555555555556
0.6555555555555556 x 100 = 65.56%