-90.79% is the change from 554 to 51
Calculation steps:
[( 51 - 554 ) ÷ 554] x 100 = -90.79%
Formula
Percentage change = [(51 - 554) / 554] x 100
Subtract the new number by the original number
51 - 554 = -503
-503 ÷ 554 = -0.907942238267148
-0.907942238267148 x 100 = -90.79%