-96.95% is the change from 821 to 25
Calculation steps:
[( 25 - 821 ) ÷ 821] x 100 = -96.95%
Formula
Percentage change = [(25 - 821) / 821] x 100
Subtract the new number by the original number
25 - 821 = -796
-796 ÷ 821 = -0.9695493300852619
-0.9695493300852619 x 100 = -96.95%