-97.29% is the change from 775 to 21
Calculation steps:
[( 21 - 775 ) ÷ 775] x 100 = -97.29%
Formula
Percentage change = [(21 - 775) / 775] x 100
Subtract the new number by the original number
21 - 775 = -754
-754 ÷ 775 = -0.9729032258064516
-0.9729032258064516 x 100 = -97.29%