2550% is the change from 16 to 424
Calculation steps:
[( 424 - 16 ) ÷ 16] x 100 = 2550%
Formula
Percentage change = [(424 - 16) / 16] x 100
Subtract the new number by the original number
424 - 16 = 408
408 ÷ 16 = 25.5
25.5 x 100 = 2550%
Example