-97.78% is the change from 721 to 16
Calculation steps:
[( 16 - 721 ) ÷ 721] x 100 = -97.78%
Formula
Percentage change = [(16 - 721) / 721] x 100
Subtract the new number by the original number
16 - 721 = -705
-705 ÷ 721 = -0.9778085991678225
-0.9778085991678225 x 100 = -97.78%