-81.95% is the change from 997 to 180
Calculation steps:
[( 180 - 997 ) ÷ 997] x 100 = -81.95%
Formula
Percentage change = [(180 - 997) / 997] x 100
Subtract the new number by the original number
180 - 997 = -817
-817 ÷ 997 = -0.8194583751253761
-0.8194583751253761 x 100 = -81.95%