4056.25% is the change from 16 to 665
Calculation steps:
[( 665 - 16 ) ÷ 16] x 100 = 4056.25%
Formula
Percentage change = [(665 - 16) / 16] x 100
Subtract the new number by the original number
665 - 16 = 649
649 ÷ 16 = 40.5625
40.5625 x 100 = 4056.25%