-56.77% is the change from 997 to 431
Calculation steps:
[( 431 - 997 ) ÷ 997] x 100 = -56.77%
Formula
Percentage change = [(431 - 997) / 997] x 100
Subtract the new number by the original number
431 - 997 = -566
-566 ÷ 997 = -0.567703109327984
-0.567703109327984 x 100 = -56.77%