-74.9% is the change from 721 to 181
Calculation steps:
[( 181 - 721 ) ÷ 721] x 100 = -74.9%
Formula
Percentage change = [(181 - 721) / 721] x 100
Subtract the new number by the original number
181 - 721 = -540
-540 ÷ 721 = -0.7489597780859917
-0.7489597780859917 x 100 = -74.9%