-39.02% is the change from 651 to 397
Calculation steps:
[( 397 - 651 ) ÷ 651] x 100 = -39.02%
Formula
Percentage change = [(397 - 651) / 651] x 100
Subtract the new number by the original number
397 - 651 = -254
-254 ÷ 651 = -0.3901689708141321
-0.3901689708141321 x 100 = -39.02%