-97.15% is the change from 737 to 21
Calculation steps:
[( 21 - 737 ) ÷ 737] x 100 = -97.15%
Formula
Percentage change = [(21 - 737) / 737] x 100
Subtract the new number by the original number
21 - 737 = -716
-716 ÷ 737 = -0.9715061058344641
-0.9715061058344641 x 100 = -97.15%