-47.21% is the change from 968 to 511
Calculation steps:
[( 511 - 968 ) ÷ 968] x 100 = -47.21%
Formula
Percentage change = [(511 - 968) / 968] x 100
Subtract the new number by the original number
511 - 968 = -457
-457 ÷ 968 = -0.47210743801652894
-0.47210743801652894 x 100 = -47.21%