-97.25% is the change from 765 to 21
Calculation steps:
[( 21 - 765 ) ÷ 765] x 100 = -97.25%
Formula
Percentage change = [(21 - 765) / 765] x 100
Subtract the new number by the original number
21 - 765 = -744
-744 ÷ 765 = -0.9725490196078431
-0.9725490196078431 x 100 = -97.25%