-97.54% is the change from 691 to 17
Calculation steps:
[( 17 - 691 ) ÷ 691] x 100 = -97.54%
Formula
Percentage change = [(17 - 691) / 691] x 100
Subtract the new number by the original number
17 - 691 = -674
-674 ÷ 691 = -0.975397973950796
-0.975397973950796 x 100 = -97.54%