347.97% is the change from 123 to 551
Calculation steps:
[( 551 - 123 ) ÷ 123] x 100 = 347.97%
Formula
Percentage change = [(551 - 123) / 123] x 100
Subtract the new number by the original number
551 - 123 = 428
428 ÷ 123 = 3.4796747967479673
3.4796747967479673 x 100 = 347.97%