3.27% is the change from 490 to 506
Calculation steps:
[( 506 - 490 ) ÷ 490] x 100 = 3.27%
Formula
Percentage change = [(506 - 490) / 490] x 100
Subtract the new number by the original number
506 - 490 = 16
16 ÷ 490 = 0.0326530612244898
0.0326530612244898 x 100 = 3.27%