4075% is the change from 16 to 668
Calculation steps:
[( 668 - 16 ) ÷ 16] x 100 = 4075%
Formula
Percentage change = [(668 - 16) / 16] x 100
Subtract the new number by the original number
668 - 16 = 652
652 ÷ 16 = 40.75
40.75 x 100 = 4075%
Example