-98.31% is the change from 651 to 11
Calculation steps:
[( 11 - 651 ) ÷ 651] x 100 = -98.31%
Formula
Percentage change = [(11 - 651) / 651] x 100
Subtract the new number by the original number
11 - 651 = -640
-640 ÷ 651 = -0.9831029185867896
-0.9831029185867896 x 100 = -98.31%