254.84% is the change from 155 to 550
Calculation steps:
[( 550 - 155 ) ÷ 155] x 100 = 254.84%
Formula
Percentage change = [(550 - 155) / 155] x 100
Subtract the new number by the original number
550 - 155 = 395
395 ÷ 155 = 2.5483870967741935
2.5483870967741935 x 100 = 254.84%