-92.78% is the change from 873 to 63
Calculation steps:
[( 63 - 873 ) ÷ 873] x 100 = -92.78%
Formula
Percentage change = [(63 - 873) / 873] x 100
Subtract the new number by the original number
63 - 873 = -810
-810 ÷ 873 = -0.9278350515463918
-0.9278350515463918 x 100 = -92.78%