7.2% is the change from 486 to 521
Calculation steps:
[( 521 - 486 ) ÷ 486] x 100 = 7.2%
Formula
Percentage change = [(521 - 486) / 486] x 100
Subtract the new number by the original number
521 - 486 = 35
35 ÷ 486 = 0.0720164609053498
0.0720164609053498 x 100 = 7.2%