-97.41% is the change from 771 to 20
Calculation steps:
[( 20 - 771 ) ÷ 771] x 100 = -97.41%
Formula
Percentage change = [(20 - 771) / 771] x 100
Subtract the new number by the original number
20 - 771 = -751
-751 ÷ 771 = -0.9740596627756161
-0.9740596627756161 x 100 = -97.41%