-96.36% is the change from 824 to 30
Calculation steps:
[( 30 - 824 ) ÷ 824] x 100 = -96.36%
Formula
Percentage change = [(30 - 824) / 824] x 100
Subtract the new number by the original number
30 - 824 = -794
-794 ÷ 824 = -0.9635922330097088
-0.9635922330097088 x 100 = -96.36%