-61.36% is the change from 823 to 318
Calculation steps:
[( 318 - 823 ) ÷ 823] x 100 = -61.36%
Formula
Percentage change = [(318 - 823) / 823] x 100
Subtract the new number by the original number
318 - 823 = -505
-505 ÷ 823 = -0.6136087484811664
-0.6136087484811664 x 100 = -61.36%