-70.23% is the change from 823 to 245
Calculation steps:
[( 245 - 823 ) ÷ 823] x 100 = -70.23%
Formula
Percentage change = [(245 - 823) / 823] x 100
Subtract the new number by the original number
245 - 823 = -578
-578 ÷ 823 = -0.7023086269744836
-0.7023086269744836 x 100 = -70.23%