-68.73% is the change from 822 to 257
Calculation steps:
[( 257 - 822 ) ÷ 822] x 100 = -68.73%
Formula
Percentage change = [(257 - 822) / 822] x 100
Subtract the new number by the original number
257 - 822 = -565
-565 ÷ 822 = -0.6873479318734793
-0.6873479318734793 x 100 = -68.73%