-77.67% is the change from 721 to 161
Calculation steps:
[( 161 - 721 ) ÷ 721] x 100 = -77.67%
Formula
Percentage change = [(161 - 721) / 721] x 100
Subtract the new number by the original number
161 - 721 = -560
-560 ÷ 721 = -0.7766990291262136
-0.7766990291262136 x 100 = -77.67%
Example