-47.89% is the change from 971 to 506
Calculation steps:
[( 506 - 971 ) ÷ 971] x 100 = -47.89%
Formula
Percentage change = [(506 - 971) / 971] x 100
Subtract the new number by the original number
506 - 971 = -465
-465 ÷ 971 = -0.4788877445932029
-0.4788877445932029 x 100 = -47.89%