-89.62% is the change from 549 to 57
Calculation steps:
[( 57 - 549 ) ÷ 549] x 100 = -89.62%
Formula
Percentage change = [(57 - 549) / 549] x 100
Subtract the new number by the original number
57 - 549 = -492
-492 ÷ 549 = -0.8961748633879781
-0.8961748633879781 x 100 = -89.62%