-66.94% is the change from 959 to 317
Calculation steps:
[( 317 - 959 ) ÷ 959] x 100 = -66.94%
Formula
Percentage change = [(317 - 959) / 959] x 100
Subtract the new number by the original number
317 - 959 = -642
-642 ÷ 959 = -0.6694473409801877
-0.6694473409801877 x 100 = -66.94%