256.77% is the change from 155 to 553
Calculation steps:
[( 553 - 155 ) ÷ 155] x 100 = 256.77%
Formula
Percentage change = [(553 - 155) / 155] x 100
Subtract the new number by the original number
553 - 155 = 398
398 ÷ 155 = 2.567741935483871
2.567741935483871 x 100 = 256.77%