-85.58% is the change from 971 to 140
Calculation steps:
[( 140 - 971 ) ÷ 971] x 100 = -85.58%
Formula
Percentage change = [(140 - 971) / 971] x 100
Subtract the new number by the original number
140 - 971 = -831
-831 ÷ 971 = -0.8558187435633368
-0.8558187435633368 x 100 = -85.58%