3817.65% is the change from 17 to 666
Calculation steps:
[( 666 - 17 ) ÷ 17] x 100 = 3817.65%
Formula
Percentage change = [(666 - 17) / 17] x 100
Subtract the new number by the original number
666 - 17 = 649
649 ÷ 17 = 38.1764705882353
38.1764705882353 x 100 = 3817.65%