145.93% is the change from 270 to 664
Calculation steps:
[( 664 - 270 ) ÷ 270] x 100 = 145.93%
Formula
Percentage change = [(664 - 270) / 270] x 100
Subtract the new number by the original number
664 - 270 = 394
394 ÷ 270 = 1.4592592592592593
1.4592592592592593 x 100 = 145.93%