3387.5% is the change from 16 to 558
Calculation steps:
[( 558 - 16 ) ÷ 16] x 100 = 3387.5%
Formula
Percentage change = [(558 - 16) / 16] x 100
Subtract the new number by the original number
558 - 16 = 542
542 ÷ 16 = 33.875
33.875 x 100 = 3387.5%
Example