2894.12% is the change from 17 to 509
Calculation steps:
[( 509 - 17 ) ÷ 17] x 100 = 2894.12%
Formula
Percentage change = [(509 - 17) / 17] x 100
Subtract the new number by the original number
509 - 17 = 492
492 ÷ 17 = 28.941176470588236
28.941176470588236 x 100 = 2894.12%