-80.23% is the change from 971 to 192
Calculation steps:
[( 192 - 971 ) ÷ 971] x 100 = -80.23%
Formula
Percentage change = [(192 - 971) / 971] x 100
Subtract the new number by the original number
192 - 971 = -779
-779 ÷ 971 = -0.8022657054582905
-0.8022657054582905 x 100 = -80.23%