-82.75% is the change from 997 to 172
Calculation steps:
[( 172 - 997 ) ÷ 997] x 100 = -82.75%
Formula
Percentage change = [(172 - 997) / 997] x 100
Subtract the new number by the original number
172 - 997 = -825
-825 ÷ 997 = -0.827482447342026
-0.827482447342026 x 100 = -82.75%