-91.27% is the change from 584 to 51
Calculation steps:
[( 51 - 584 ) ÷ 584] x 100 = -91.27%
Formula
Percentage change = [(51 - 584) / 584] x 100
Subtract the new number by the original number
51 - 584 = -533
-533 ÷ 584 = -0.9126712328767124
-0.9126712328767124 x 100 = -91.27%