-98.61% is the change from 721 to 10
Calculation steps:
[( 10 - 721 ) ÷ 721] x 100 = -98.61%
Formula
Percentage change = [(10 - 721) / 721] x 100
Subtract the new number by the original number
10 - 721 = -711
-711 ÷ 721 = -0.986130374479889
-0.986130374479889 x 100 = -98.61%