251.39% is the change from 144 to 506
Calculation steps:
[( 506 - 144 ) ÷ 144] x 100 = 251.39%
Formula
Percentage change = [(506 - 144) / 144] x 100
Subtract the new number by the original number
506 - 144 = 362
362 ÷ 144 = 2.513888888888889
2.513888888888889 x 100 = 251.39%