-80.7% is the change from 891 to 172
Calculation steps:
[( 172 - 891 ) ÷ 891] x 100 = -80.7%
Formula
Percentage change = [(172 - 891) / 891] x 100
Subtract the new number by the original number
172 - 891 = -719
-719 ÷ 891 = -0.8069584736251403
-0.8069584736251403 x 100 = -80.7%