1562.5% is the change from 24 to 399
Calculation steps:
[( 399 - 24 ) ÷ 24] x 100 = 1562.5%
Formula
Percentage change = [(399 - 24) / 24] x 100
Subtract the new number by the original number
399 - 24 = 375
375 ÷ 24 = 15.625
15.625 x 100 = 1562.5%
Example