-70.47% is the change from 823 to 243
Calculation steps:
[( 243 - 823 ) ÷ 823] x 100 = -70.47%
Formula
Percentage change = [(243 - 823) / 823] x 100
Subtract the new number by the original number
243 - 823 = -580
-580 ÷ 823 = -0.7047387606318347
-0.7047387606318347 x 100 = -70.47%