-80.06% is the change from 687 to 137
Calculation steps:
[( 137 - 687 ) ÷ 687] x 100 = -80.06%
Formula
Percentage change = [(137 - 687) / 687] x 100
Subtract the new number by the original number
137 - 687 = -550
-550 ÷ 687 = -0.8005822416302766
-0.8005822416302766 x 100 = -80.06%