-97.2% is the change from 749 to 21
Calculation steps:
[( 21 - 749 ) ÷ 749] x 100 = -97.2%
Formula
Percentage change = [(21 - 749) / 749] x 100
Subtract the new number by the original number
21 - 749 = -728
-728 ÷ 749 = -0.9719626168224299
-0.9719626168224299 x 100 = -97.2%