-32.34% is the change from 971 to 657
Calculation steps:
[( 657 - 971 ) ÷ 971] x 100 = -32.34%
Formula
Percentage change = [(657 - 971) / 971] x 100
Subtract the new number by the original number
657 - 971 = -314
-314 ÷ 971 = -0.3233779608650875
-0.3233779608650875 x 100 = -32.34%