8.51% is the change from 505 to 548
Calculation steps:
[( 548 - 505 ) ÷ 505] x 100 = 8.51%
Formula
Percentage change = [(548 - 505) / 505] x 100
Subtract the new number by the original number
548 - 505 = 43
43 ÷ 505 = 0.08514851485148515
0.08514851485148515 x 100 = 8.51%