-71.16% is the change from 971 to 280
Calculation steps:
[( 280 - 971 ) ÷ 971] x 100 = -71.16%
Formula
Percentage change = [(280 - 971) / 971] x 100
Subtract the new number by the original number
280 - 971 = -691
-691 ÷ 971 = -0.7116374871266735
-0.7116374871266735 x 100 = -71.16%