-56.64% is the change from 971 to 421
Calculation steps:
[( 421 - 971 ) ÷ 971] x 100 = -56.64%
Formula
Percentage change = [(421 - 971) / 971] x 100
Subtract the new number by the original number
421 - 971 = -550
-550 ÷ 971 = -0.5664263645726055
-0.5664263645726055 x 100 = -56.64%