-97.15% is the change from 736 to 21
Calculation steps:
[( 21 - 736 ) ÷ 736] x 100 = -97.15%
Formula
Percentage change = [(21 - 736) / 736] x 100
Subtract the new number by the original number
21 - 736 = -715
-715 ÷ 736 = -0.9714673913043478
-0.9714673913043478 x 100 = -97.15%