-81.75% is the change from 548 to 100
Calculation steps:
[( 100 - 548 ) ÷ 548] x 100 = -81.75%
Formula
Percentage change = [(100 - 548) / 548] x 100
Subtract the new number by the original number
100 - 548 = -448
-448 ÷ 548 = -0.8175182481751825
-0.8175182481751825 x 100 = -81.75%