-97.58% is the change from 662 to 16
Calculation steps:
[( 16 - 662 ) ÷ 662] x 100 = -97.58%
Formula
Percentage change = [(16 - 662) / 662] x 100
Subtract the new number by the original number
16 - 662 = -646
-646 ÷ 662 = -0.9758308157099698
-0.9758308157099698 x 100 = -97.58%