-15.85% is the change from 549 to 462
Calculation steps:
[( 462 - 549 ) ÷ 549] x 100 = -15.85%
Formula
Percentage change = [(462 - 549) / 549] x 100
Subtract the new number by the original number
462 - 549 = -87
-87 ÷ 549 = -0.15846994535519127
-0.15846994535519127 x 100 = -15.85%