242.58% is the change from 155 to 531
Calculation steps:
[( 531 - 155 ) ÷ 155] x 100 = 242.58%
Formula
Percentage change = [(531 - 155) / 155] x 100
Subtract the new number by the original number
531 - 155 = 376
376 ÷ 155 = 2.425806451612903
2.425806451612903 x 100 = 242.58%