-97.03% is the change from 977 to 29
Calculation steps:
[( 29 - 977 ) ÷ 977] x 100 = -97.03%
Formula
Percentage change = [(29 - 977) / 977] x 100
Subtract the new number by the original number
29 - 977 = -948
-948 ÷ 977 = -0.970317297850563
-0.970317297850563 x 100 = -97.03%
Example