6.78% is the change from 487 to 520
Calculation steps:
[( 520 - 487 ) ÷ 487] x 100 = 6.78%
Formula
Percentage change = [(520 - 487) / 487] x 100
Subtract the new number by the original number
520 - 487 = 33
33 ÷ 487 = 0.06776180698151951
0.06776180698151951 x 100 = 6.78%