-74.96% is the change from 687 to 172
Calculation steps:
[( 172 - 687 ) ÷ 687] x 100 = -74.96%
Formula
Percentage change = [(172 - 687) / 687] x 100
Subtract the new number by the original number
172 - 687 = -515
-515 ÷ 687 = -0.7496360989810772
-0.7496360989810772 x 100 = -74.96%