-96.93% is the change from 977 to 30
Calculation steps:
[( 30 - 977 ) ÷ 977] x 100 = -96.93%
Formula
Percentage change = [(30 - 977) / 977] x 100
Subtract the new number by the original number
30 - 977 = -947
-947 ÷ 977 = -0.9692937563971341
-0.9692937563971341 x 100 = -96.93%