-67.87% is the change from 971 to 312
Calculation steps:
[( 312 - 971 ) ÷ 971] x 100 = -67.87%
Formula
Percentage change = [(312 - 971) / 971] x 100
Subtract the new number by the original number
312 - 971 = -659
-659 ÷ 971 = -0.678681771369722
-0.678681771369722 x 100 = -67.87%