-94.9% is the change from 824 to 42
Calculation steps:
[( 42 - 824 ) ÷ 824] x 100 = -94.9%
Formula
Percentage change = [(42 - 824) / 824] x 100
Subtract the new number by the original number
42 - 824 = -782
-782 ÷ 824 = -0.9490291262135923
-0.9490291262135923 x 100 = -94.9%