-66.38% is the change from 687 to 231
Calculation steps:
[( 231 - 687 ) ÷ 687] x 100 = -66.38%
Formula
Percentage change = [(231 - 687) / 687] x 100
Subtract the new number by the original number
231 - 687 = -456
-456 ÷ 687 = -0.6637554585152838
-0.6637554585152838 x 100 = -66.38%