-97.23% is the change from 757 to 21
Calculation steps:
[( 21 - 757 ) ÷ 757] x 100 = -97.23%
Formula
Percentage change = [(21 - 757) / 757] x 100
Subtract the new number by the original number
21 - 757 = -736
-736 ÷ 757 = -0.9722589167767504
-0.9722589167767504 x 100 = -97.23%