594.67% is the change from 75 to 521
Calculation steps:
[( 521 - 75 ) ÷ 75] x 100 = 594.67%
Formula
Percentage change = [(521 - 75) / 75] x 100
Subtract the new number by the original number
521 - 75 = 446
446 ÷ 75 = 5.946666666666666
5.946666666666666 x 100 = 594.67%