-40.51% is the change from 548 to 326
Calculation steps:
[( 326 - 548 ) ÷ 548] x 100 = -40.51%
Formula
Percentage change = [(326 - 548) / 548] x 100
Subtract the new number by the original number
326 - 548 = -222
-222 ÷ 548 = -0.4051094890510949
-0.4051094890510949 x 100 = -40.51%