-29.97% is the change from 971 to 680
Calculation steps:
[( 680 - 971 ) ÷ 971] x 100 = -29.97%
Formula
Percentage change = [(680 - 971) / 971] x 100
Subtract the new number by the original number
680 - 971 = -291
-291 ÷ 971 = -0.2996910401647786
-0.2996910401647786 x 100 = -29.97%