-80.33% is the change from 971 to 191
Calculation steps:
[( 191 - 971 ) ÷ 971] x 100 = -80.33%
Formula
Percentage change = [(191 - 971) / 971] x 100
Subtract the new number by the original number
191 - 971 = -780
-780 ÷ 971 = -0.8032955715756952
-0.8032955715756952 x 100 = -80.33%