9.27% is the change from 550 to 601
Calculation steps:
[( 601 - 550 ) ÷ 550] x 100 = 9.27%
Formula
Percentage change = [(601 - 550) / 550] x 100
Subtract the new number by the original number
601 - 550 = 51
51 ÷ 550 = 0.09272727272727273
0.09272727272727273 x 100 = 9.27%