147.78% is the change from 270 to 669
Calculation steps:
[( 669 - 270 ) ÷ 270] x 100 = 147.78%
Formula
Percentage change = [(669 - 270) / 270] x 100
Subtract the new number by the original number
669 - 270 = 399
399 ÷ 270 = 1.4777777777777779
1.4777777777777779 x 100 = 147.78%