9.07% is the change from 551 to 601
Calculation steps:
[( 601 - 551 ) ÷ 551] x 100 = 9.07%
Formula
Percentage change = [(601 - 551) / 551] x 100
Subtract the new number by the original number
601 - 551 = 50
50 ÷ 551 = 0.09074410163339383
0.09074410163339383 x 100 = 9.07%