-95.37% is the change from 820 to 38
Calculation steps:
[( 38 - 820 ) ÷ 820] x 100 = -95.37%
Formula
Percentage change = [(38 - 820) / 820] x 100
Subtract the new number by the original number
38 - 820 = -782
-782 ÷ 820 = -0.9536585365853658
-0.9536585365853658 x 100 = -95.37%