25.54% is the change from 415 to 521
Calculation steps:
[( 521 - 415 ) ÷ 415] x 100 = 25.54%
Formula
Percentage change = [(521 - 415) / 415] x 100
Subtract the new number by the original number
521 - 415 = 106
106 ÷ 415 = 0.25542168674698795
0.25542168674698795 x 100 = 25.54%