-47.37% is the change from 971 to 511
Calculation steps:
[( 511 - 971 ) ÷ 971] x 100 = -47.37%
Formula
Percentage change = [(511 - 971) / 971] x 100
Subtract the new number by the original number
511 - 971 = -460
-460 ÷ 971 = -0.4737384140061792
-0.4737384140061792 x 100 = -47.37%