-68% is the change from 997 to 319
Calculation steps:
[( 319 - 997 ) ÷ 997] x 100 = -68%
Formula
Percentage change = [(319 - 997) / 997] x 100
Subtract the new number by the original number
319 - 997 = -678
-678 ÷ 997 = -0.6800401203610833
-0.6800401203610833 x 100 = -68%