-68.3% is the change from 997 to 316
Calculation steps:
[( 316 - 997 ) ÷ 997] x 100 = -68.3%
Formula
Percentage change = [(316 - 997) / 997] x 100
Subtract the new number by the original number
316 - 997 = -681
-681 ÷ 997 = -0.683049147442327
-0.683049147442327 x 100 = -68.3%