-89.26% is the change from 475 to 51
Calculation steps:
[( 51 - 475 ) ÷ 475] x 100 = -89.26%
Formula
Percentage change = [(51 - 475) / 475] x 100
Subtract the new number by the original number
51 - 475 = -424
-424 ÷ 475 = -0.8926315789473684
-0.8926315789473684 x 100 = -89.26%