-84.13% is the change from 687 to 109
Calculation steps:
[( 109 - 687 ) ÷ 687] x 100 = -84.13%
Formula
Percentage change = [(109 - 687) / 687] x 100
Subtract the new number by the original number
109 - 687 = -578
-578 ÷ 687 = -0.8413391557496361
-0.8413391557496361 x 100 = -84.13%