-81.14% is the change from 721 to 136
Calculation steps:
[( 136 - 721 ) ÷ 721] x 100 = -81.14%
Formula
Percentage change = [(136 - 721) / 721] x 100
Subtract the new number by the original number
136 - 721 = -585
-585 ÷ 721 = -0.811373092926491
-0.811373092926491 x 100 = -81.14%