-92.61% is the change from 663 to 49
Calculation steps:
[( 49 - 663 ) ÷ 663] x 100 = -92.61%
Formula
Percentage change = [(49 - 663) / 663] x 100
Subtract the new number by the original number
49 - 663 = -614
-614 ÷ 663 = -0.9260935143288085
-0.9260935143288085 x 100 = -92.61%