154.81% is the change from 270 to 688
Calculation steps:
[( 688 - 270 ) ÷ 270] x 100 = 154.81%
Formula
Percentage change = [(688 - 270) / 270] x 100
Subtract the new number by the original number
688 - 270 = 418
418 ÷ 270 = 1.548148148148148
1.548148148148148 x 100 = 154.81%