-73.8% is the change from 687 to 180
Calculation steps:
[( 180 - 687 ) ÷ 687] x 100 = -73.8%
Formula
Percentage change = [(180 - 687) / 687] x 100
Subtract the new number by the original number
180 - 687 = -507
-507 ÷ 687 = -0.7379912663755459
-0.7379912663755459 x 100 = -73.8%