6.25% is the change from 480 to 510
Calculation steps:
[( 510 - 480 ) ÷ 480] x 100 = 6.25%
Formula
Percentage change = [(510 - 480) / 480] x 100
Subtract the new number by the original number
510 - 480 = 30
30 ÷ 480 = 0.0625
0.0625 x 100 = 6.25%
Example