-97.42% is the change from 658 to 17
Calculation steps:
[( 17 - 658 ) ÷ 658] x 100 = -97.42%
Formula
Percentage change = [(17 - 658) / 658] x 100
Subtract the new number by the original number
17 - 658 = -641
-641 ÷ 658 = -0.9741641337386018
-0.9741641337386018 x 100 = -97.42%
Example