17.08% is the change from 445 to 521
Calculation steps:
[( 521 - 445 ) ÷ 445] x 100 = 17.08%
Formula
Percentage change = [(521 - 445) / 445] x 100
Subtract the new number by the original number
521 - 445 = 76
76 ÷ 445 = 0.1707865168539326
0.1707865168539326 x 100 = 17.08%