-97.21% is the change from 609 to 17
Calculation steps:
[( 17 - 609 ) ÷ 609] x 100 = -97.21%
Formula
Percentage change = [(17 - 609) / 609] x 100
Subtract the new number by the original number
17 - 609 = -592
-592 ÷ 609 = -0.9720853858784894
-0.9720853858784894 x 100 = -97.21%