1550% is the change from 24 to 396
Calculation steps:
[( 396 - 24 ) ÷ 24] x 100 = 1550%
Formula
Percentage change = [(396 - 24) / 24] x 100
Subtract the new number by the original number
396 - 24 = 372
372 ÷ 24 = 15.5
15.5 x 100 = 1550%
Example