-79.98% is the change from 899 to 180
Calculation steps:
[( 180 - 899 ) ÷ 899] x 100 = -79.98%
Formula
Percentage change = [(180 - 899) / 899] x 100
Subtract the new number by the original number
180 - 899 = -719
-719 ÷ 899 = -0.7997775305895439
-0.7997775305895439 x 100 = -79.98%