318.06% is the change from 155 to 648
Calculation steps:
[( 648 - 155 ) ÷ 155] x 100 = 318.06%
Formula
Percentage change = [(648 - 155) / 155] x 100
Subtract the new number by the original number
648 - 155 = 493
493 ÷ 155 = 3.1806451612903226
3.1806451612903226 x 100 = 318.06%