180% is the change from 155 to 434
Calculation steps:
[( 434 - 155 ) ÷ 155] x 100 = 180%
Formula
Percentage change = [(434 - 155) / 155] x 100
Subtract the new number by the original number
434 - 155 = 279
279 ÷ 155 = 1.8
1.8 x 100 = 180%
Example