-96.83% is the change from 947 to 30
Calculation steps:
[( 30 - 947 ) ÷ 947] x 100 = -96.83%
Formula
Percentage change = [(30 - 947) / 947] x 100
Subtract the new number by the original number
30 - 947 = -917
-917 ÷ 947 = -0.9683210137275607
-0.9683210137275607 x 100 = -96.83%