-97.47% is the change from 673 to 17
Calculation steps:
[( 17 - 673 ) ÷ 673] x 100 = -97.47%
Formula
Percentage change = [(17 - 673) / 673] x 100
Subtract the new number by the original number
17 - 673 = -656
-656 ÷ 673 = -0.974739970282318
-0.974739970282318 x 100 = -97.47%