-99.09% is the change from 549 to 5
Calculation steps:
[( 5 - 549 ) ÷ 549] x 100 = -99.09%
Formula
Percentage change = [(5 - 549) / 549] x 100
Subtract the new number by the original number
5 - 549 = -544
-544 ÷ 549 = -0.9908925318761385
-0.9908925318761385 x 100 = -99.09%