-69.62% is the change from 823 to 250
Calculation steps:
[( 250 - 823 ) ÷ 823] x 100 = -69.62%
Formula
Percentage change = [(250 - 823) / 823] x 100
Subtract the new number by the original number
250 - 823 = -573
-573 ÷ 823 = -0.6962332928311057
-0.6962332928311057 x 100 = -69.62%