-66.53% is the change from 947 to 317
Calculation steps:
[( 317 - 947 ) ÷ 947] x 100 = -66.53%
Formula
Percentage change = [(317 - 947) / 947] x 100
Subtract the new number by the original number
317 - 947 = -630
-630 ÷ 947 = -0.665258711721225
-0.665258711721225 x 100 = -66.53%