-97.01% is the change from 702 to 21
Calculation steps:
[( 21 - 702 ) ÷ 702] x 100 = -97.01%
Formula
Percentage change = [(21 - 702) / 702] x 100
Subtract the new number by the original number
21 - 702 = -681
-681 ÷ 702 = -0.9700854700854701
-0.9700854700854701 x 100 = -97.01%