4062.5% is the change from 24 to 999
Calculation steps:
[( 999 - 24 ) ÷ 24] x 100 = 4062.5%
Formula
Percentage change = [(999 - 24) / 24] x 100
Subtract the new number by the original number
999 - 24 = 975
975 ÷ 24 = 40.625
40.625 x 100 = 4062.5%
Example