-97.49% is the change from 997 to 25
Calculation steps:
[( 25 - 997 ) ÷ 997] x 100 = -97.49%
Formula
Percentage change = [(25 - 997) / 997] x 100
Subtract the new number by the original number
25 - 997 = -972
-972 ÷ 997 = -0.9749247743229689
-0.9749247743229689 x 100 = -97.49%