-95.39% is the change from 651 to 30
Calculation steps:
[( 30 - 651 ) ÷ 651] x 100 = -95.39%
Formula
Percentage change = [(30 - 651) / 651] x 100
Subtract the new number by the original number
30 - 651 = -621
-621 ÷ 651 = -0.9539170506912442
-0.9539170506912442 x 100 = -95.39%