287.1% is the change from 155 to 600
Calculation steps:
[( 600 - 155 ) ÷ 155] x 100 = 287.1%
Formula
Percentage change = [(600 - 155) / 155] x 100
Subtract the new number by the original number
600 - 155 = 445
445 ÷ 155 = 2.870967741935484
2.870967741935484 x 100 = 287.1%