227.74% is the change from 155 to 508
Calculation steps:
[( 508 - 155 ) ÷ 155] x 100 = 227.74%
Formula
Percentage change = [(508 - 155) / 155] x 100
Subtract the new number by the original number
508 - 155 = 353
353 ÷ 155 = 2.2774193548387096
2.2774193548387096 x 100 = 227.74%