-94.31% is the change from 545 to 31
Calculation steps:
[( 31 - 545 ) ÷ 545] x 100 = -94.31%
Formula
Percentage change = [(31 - 545) / 545] x 100
Subtract the new number by the original number
31 - 545 = -514
-514 ÷ 545 = -0.9431192660550459
-0.9431192660550459 x 100 = -94.31%