2543.75% is the change from 16 to 423
Calculation steps:
[( 423 - 16 ) ÷ 16] x 100 = 2543.75%
Formula
Percentage change = [(423 - 16) / 16] x 100
Subtract the new number by the original number
423 - 16 = 407
407 ÷ 16 = 25.4375
25.4375 x 100 = 2543.75%