147.41% is the change from 270 to 668
Calculation steps:
[( 668 - 270 ) ÷ 270] x 100 = 147.41%
Formula
Percentage change = [(668 - 270) / 270] x 100
Subtract the new number by the original number
668 - 270 = 398
398 ÷ 270 = 1.474074074074074
1.474074074074074 x 100 = 147.41%