-97.4% is the change from 654 to 17
Calculation steps:
[( 17 - 654 ) ÷ 654] x 100 = -97.4%
Formula
Percentage change = [(17 - 654) / 654] x 100
Subtract the new number by the original number
17 - 654 = -637
-637 ÷ 654 = -0.9740061162079511
-0.9740061162079511 x 100 = -97.4%