-99.17% is the change from 721 to 6
Calculation steps:
[( 6 - 721 ) ÷ 721] x 100 = -99.17%
Formula
Percentage change = [(6 - 721) / 721] x 100
Subtract the new number by the original number
6 - 721 = -715
-715 ÷ 721 = -0.9916782246879334
-0.9916782246879334 x 100 = -99.17%