-67.15% is the change from 971 to 319
Calculation steps:
[( 319 - 971 ) ÷ 971] x 100 = -67.15%
Formula
Percentage change = [(319 - 971) / 971] x 100
Subtract the new number by the original number
319 - 971 = -652
-652 ÷ 971 = -0.6714727085478888
-0.6714727085478888 x 100 = -67.15%