-92.88% is the change from 646 to 46
Calculation steps:
[( 46 - 646 ) ÷ 646] x 100 = -92.88%
Formula
Percentage change = [(46 - 646) / 646] x 100
Subtract the new number by the original number
46 - 646 = -600
-600 ÷ 646 = -0.9287925696594427
-0.9287925696594427 x 100 = -92.88%