-84.83% is the change from 646 to 98
Calculation steps:
[( 98 - 646 ) ÷ 646] x 100 = -84.83%
Formula
Percentage change = [(98 - 646) / 646] x 100
Subtract the new number by the original number
98 - 646 = -548
-548 ÷ 646 = -0.848297213622291
-0.848297213622291 x 100 = -84.83%
Example