145.56% is the change from 270 to 663
Calculation steps:
[( 663 - 270 ) ÷ 270] x 100 = 145.56%
Formula
Percentage change = [(663 - 270) / 270] x 100
Subtract the new number by the original number
663 - 270 = 393
393 ÷ 270 = 1.4555555555555555
1.4555555555555555 x 100 = 145.56%