226.45% is the change from 155 to 506
Calculation steps:
[( 506 - 155 ) ÷ 155] x 100 = 226.45%
Formula
Percentage change = [(506 - 155) / 155] x 100
Subtract the new number by the original number
506 - 155 = 351
351 ÷ 155 = 2.264516129032258
2.264516129032258 x 100 = 226.45%