-51.31% is the change from 651 to 317
Calculation steps:
[( 317 - 651 ) ÷ 651] x 100 = -51.31%
Formula
Percentage change = [(317 - 651) / 651] x 100
Subtract the new number by the original number
317 - 651 = -334
-334 ÷ 651 = -0.5130568356374808
-0.5130568356374808 x 100 = -51.31%