-97.34% is the change from 789 to 21
Calculation steps:
[( 21 - 789 ) ÷ 789] x 100 = -97.34%
Formula
Percentage change = [(21 - 789) / 789] x 100
Subtract the new number by the original number
21 - 789 = -768
-768 ÷ 789 = -0.973384030418251
-0.973384030418251 x 100 = -97.34%