3.51% is the change from 485 to 502
Calculation steps:
[( 502 - 485 ) ÷ 485] x 100 = 3.51%
Formula
Percentage change = [(502 - 485) / 485] x 100
Subtract the new number by the original number
502 - 485 = 17
17 ÷ 485 = 0.03505154639175258
0.03505154639175258 x 100 = 3.51%