-34.71% is the change from 971 to 634
Calculation steps:
[( 634 - 971 ) ÷ 971] x 100 = -34.71%
Formula
Percentage change = [(634 - 971) / 971] x 100
Subtract the new number by the original number
634 - 971 = -337
-337 ÷ 971 = -0.3470648815653965
-0.3470648815653965 x 100 = -34.71%