-66.63% is the change from 971 to 324
Calculation steps:
[( 324 - 971 ) ÷ 971] x 100 = -66.63%
Formula
Percentage change = [(324 - 971) / 971] x 100
Subtract the new number by the original number
324 - 971 = -647
-647 ÷ 971 = -0.666323377960865
-0.666323377960865 x 100 = -66.63%