-26.21% is the change from 931 to 687
Calculation steps:
[( 687 - 931 ) ÷ 931] x 100 = -26.21%
Formula
Percentage change = [(687 - 931) / 931] x 100
Subtract the new number by the original number
687 - 931 = -244
-244 ÷ 931 = -0.2620837808807734
-0.2620837808807734 x 100 = -26.21%