-97.53% is the change from 687 to 17
Calculation steps:
[( 17 - 687 ) ÷ 687] x 100 = -97.53%
Formula
Percentage change = [(17 - 687) / 687] x 100
Subtract the new number by the original number
17 - 687 = -670
-670 ÷ 687 = -0.975254730713246
-0.975254730713246 x 100 = -97.53%