-68.97% is the change from 809 to 251
Calculation steps:
[( 251 - 809 ) ÷ 809] x 100 = -68.97%
Formula
Percentage change = [(251 - 809) / 809] x 100
Subtract the new number by the original number
251 - 809 = -558
-558 ÷ 809 = -0.6897404202719407
-0.6897404202719407 x 100 = -68.97%