-97.32% is the change from 783 to 21
Calculation steps:
[( 21 - 783 ) ÷ 783] x 100 = -97.32%
Formula
Percentage change = [(21 - 783) / 783] x 100
Subtract the new number by the original number
21 - 783 = -762
-762 ÷ 783 = -0.9731800766283525
-0.9731800766283525 x 100 = -97.32%