-14.39% is the change from 549 to 470
Calculation steps:
[( 470 - 549 ) ÷ 549] x 100 = -14.39%
Formula
Percentage change = [(470 - 549) / 549] x 100
Subtract the new number by the original number
470 - 549 = -79
-79 ÷ 549 = -0.14389799635701275
-0.14389799635701275 x 100 = -14.39%