9.56% is the change from 502 to 550
Calculation steps:
[( 550 - 502 ) ÷ 502] x 100 = 9.56%
Formula
Percentage change = [(550 - 502) / 502] x 100
Subtract the new number by the original number
550 - 502 = 48
48 ÷ 502 = 0.09561752988047809
0.09561752988047809 x 100 = 9.56%