-67.99% is the change from 809 to 259
Calculation steps:
[( 259 - 809 ) ÷ 809] x 100 = -67.99%
Formula
Percentage change = [(259 - 809) / 809] x 100
Subtract the new number by the original number
259 - 809 = -550
-550 ÷ 809 = -0.6798516687268232
-0.6798516687268232 x 100 = -67.99%