-51.23% is the change from 650 to 317
Calculation steps:
[( 317 - 650 ) ÷ 650] x 100 = -51.23%
Formula
Percentage change = [(317 - 650) / 650] x 100
Subtract the new number by the original number
317 - 650 = -333
-333 ÷ 650 = -0.5123076923076924
-0.5123076923076924 x 100 = -51.23%