29.56% is the change from 521 to 675
Calculation steps:
[( 675 - 521 ) ÷ 521] x 100 = 29.56%
Formula
Percentage change = [(675 - 521) / 521] x 100
Subtract the new number by the original number
675 - 521 = 154
154 ÷ 521 = 0.29558541266794625
0.29558541266794625 x 100 = 29.56%