-99.23% is the change from 651 to 5
Calculation steps:
[( 5 - 651 ) ÷ 651] x 100 = -99.23%
Formula
Percentage change = [(5 - 651) / 651] x 100
Subtract the new number by the original number
5 - 651 = -646
-646 ÷ 651 = -0.9923195084485407
-0.9923195084485407 x 100 = -99.23%