-69.31% is the change from 997 to 306
Calculation steps:
[( 306 - 997 ) ÷ 997] x 100 = -69.31%
Formula
Percentage change = [(306 - 997) / 997] x 100
Subtract the new number by the original number
306 - 997 = -691
-691 ÷ 997 = -0.6930792377131394
-0.6930792377131394 x 100 = -69.31%