3.2% is the change from 531 to 548
Calculation steps:
[( 548 - 531 ) ÷ 531] x 100 = 3.2%
Formula
Percentage change = [(548 - 531) / 531] x 100
Subtract the new number by the original number
548 - 531 = 17
17 ÷ 531 = 0.032015065913371
0.032015065913371 x 100 = 3.2%