-66.2% is the change from 938 to 317
Calculation steps:
[( 317 - 938 ) ÷ 938] x 100 = -66.2%
Formula
Percentage change = [(317 - 938) / 938] x 100
Subtract the new number by the original number
317 - 938 = -621
-621 ÷ 938 = -0.662046908315565
-0.662046908315565 x 100 = -66.2%