-19.08% is the change from 891 to 721
Calculation steps:
[( 721 - 891 ) ÷ 891] x 100 = -19.08%
Formula
Percentage change = [(721 - 891) / 891] x 100
Subtract the new number by the original number
721 - 891 = -170
-170 ÷ 891 = -0.19079685746352412
-0.19079685746352412 x 100 = -19.08%